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Unit 4 【单元测试 · 提升卷】
(满分：150分 时间：120分钟)
第一部分 听力(共两节，满分30分)
第一节(共5小题；每小题1.5分，满分 7.5分)
听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
1.What do we know about Alex?
A.He caused the computer problem.
B.He needs help.
C.He can solve the computer problem.
2.Why does the man feel sorry for the woman?
A.Because she had a difficult travel.
B.Because she missed the Carnival.
C.Because he failed to meet her earlier.
3.How will the speakers travel?
A.By boat. B.By train. C.By air.
4.What is the man going to do first?
A.Finish his writing. B.Have supper. C.Watch TV.
5.What are the speakers talking about?
A.Their children. B.Their favourite color. C.A jacket.
第二节（共15小题；每小题1.5分，满分22.5分）
听下面5段对话或独白,每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。
听第6段材料，回答第6~8小题。
6.Whose birthday is it?
A.Stella’s. B.Don’s. C.Kit’s.
7.Why can’t the girl come and play?
A.Her aunt won’t allow her to.
B.She has to help her mother.
C.She lives too far away.
8.What do we know about Liz?
A.She works in a sweetshop.
B.She has two brothers.
C.She is a newborn baby.
听第7段材料，回答第9~11小题。
9.Where are the speakers?
A.At home. B.In a hospital. C.In an office.
10.Why doesn’t the man sleep well?
A.His cough is particularly bad at night.
B.He has to prepare for the conference.
C.He has got a fever.
11.Why doesn’t the man go to the clinic?
A.He is having a meeting. B.He is too busy to go there.
C.He can take care of himself.
听第8段材料，回答第12~14小题。
12.What are the speakers talking about?
A.Hotels. B.Vacation plans. C.Dreams.
13.Where will the woman stay in Seattle?
A.In her cousin’s. B.In a hotel. C.In her parents’.
14.When will the woman leave for her holiday?
A.Next Friday. B.Next Wednesday. C.A week later.
听第9段材料，回答第15~17小题。
15.Where is the man going?
A.The Plaza Hotel. B.Madison Street. C.Park Street.
16.Why does the driver suggest Park Street?
A.Because there is heavy traffic in Madison Street.
B.Because it is the fastest way.
C.Because there is a traffic jam ahead in Madison Street.
17.Which way do they finally take?
A.Madison Street. B.Park Street. C.50th Street.
听第10段材料，回答第18~20小题。
18.Where do most British people prefer to spend the Easter holiday?
A.On the continent. B.In Britain. C.All around the world.
19.What does the British want to enjoy during the holiday?
A.The airport service. B.The showers. C.The sun.
20.What’s the weather going to be like on the continent during the holiday?
A.Cold and windy. B.Low temperature. C.Rainy.
答案及听力原文
答案：1~5 CBABC 6~10 CBCCA 11~15 BBABA 16~20 ACACB
听力原文：
Text 1
W:Our computer isn’t working well.It crashed five times today.
M:I’ll go and visit my friend Alex tomorrow.
Text 2
W:I would have come back a week earlier，but the weather was so bad that we couldn’t travel.
M:That’s a real pity.The Carnival lasted a fortnight and only finished yesterday.
Text 3
M:I’ll pick you up at a quarter to eleven tomorrow morning.
W:How long will the journey last?
M:It’s a three and a half hours’ drive.And we should give ourselves forty minutes to have lunch，and another ten to wait for the ferry.
Text 4
M:Mum，my favourite TV show is on this evening.
W:But first you must finish your writing.
M:You promised to help me.
W:No problem.But supper is ready now.
Text 5
M:That’s a nice jacket.I really like the design and the colour.
W:It’s my son’s.He got it as a birthday present.
M:It’s a bit large，isn’t it?
W:Large?You just can’t imagine what a giant he is.
Text 6
M:Hi，you’re new here，aren’t you?What’s your name?
W:Stella.
M:Want to come and play?
W:I’d like to，but I can’t.My mum says I’ve got to stay and help her.It’s my brother’s birthday and we’re having a party.
M:Oh，you’ve got a brother，have you?
W:I’ve got two brothers.Kit，the one with the birthday，is only fourteen.I’ve got a big brother who’s married.His name’s Don.
M:Does your brother Don live near here?
W:Yes，not very far away.Cath—that’s his wife—works in the sweetshop over there.They’ve got a new baby called Liz.I mean Elizabeth really，but we call her Liz.
M:Is that your mum over there calling you?
W:No，that’s my Aunt May，my mum’s sister.I’d better go.Bye.
M:Bye.
Text 7
W:Morning.
M:Morning.
W:But...but how are you today?You don’t look very well.
M:I’m not.I have a sore throat，and I cough，especially at night.So I can’t sleep very well.
W:Oh!Have you got a temperature?
M:Yeah，I’ve got a fever.
W:Um，I think you’ve got the flu.I suggest you take a day off and go back home to have a good rest.
M:Sounds great.But I have to prepare my speech for the conference.You know，it’s only five days from now.And yesterday they asked me for the summary.
W:Did you go to the clinic?
M:I had no time for it and there’s no way until I finish the summary.
W:Take your time and take good care of yourself.
M:Sure.Thank you.
Text 8
M:Hi，Betty，where are you going for your vacation?
W:Seattle.I’ve been wanting to go there for ages.
M:Now your dream will come true.When are you off?
W:Next Wednesday evening.
M:How are you getting to the airport?Is anybody seeing you off?
W:Yes，my brother will go with me to the airport to see me off.We’ll take a taxi.My plane takes off at 8：30.
M:Are you staying in a hotel in Seattle?Hotels there are particularly expensive and it’s hard to book one at this time of a year.
W:No，not necessary.My cousin lives there and I’m staying with her.What about you?Are you going anywhere?
M:Yeah.I’m going to New York on Friday with my parents.
W:How are you getting there?By train?
M:No，by plane.
W:How long are you staying there?
M:It all depends.Maybe a week.See you when we get back.Have a nice time in Seattle.
W:Good luck.Have a nice trip.
Text 9
W:Where do you want to go?
M:Would you please take me uptown?I’m going to the Plaza Hotel.
W:Do you want to go up Madison Street?
M:Is that the fastest way?I’m in a hurry.
W:The traffic is very heavy on Madison Street now.
M:What other way can you go?
W:I can take Park Street.
M:All right.
W:There’s a traffic jam up ahead.
M:In that case，turn left at the next traffic light.
W:OK.I’ll go west on 50th Street.
M:Thanks.I don’t want to be late.
Text 10
Airports are reporting heavy business as thousands of people set off on their Easter holidays.A number of airlines say there’s been a big last-minute rush and British Airways are expecting record bookings with more than twenty thousand passengers flying to the continent today.But holiday-makers may not find the sun they’re seeking.Reports from European resorts are not encouraging.In most places，the temperature is only in the mid-fifties.Even so，that’s better than in Britain.The forecasters here say it’s going to be cold and windy today，with wintry showers at times.But there will be some sunny intervals.
第二部分 阅读理解(共两节，满分50分)
第一节 (共15小题；每小题2.5分，满分37.5分)
阅读下列短文，从每题所给的A、B、C和D四个选项中选出最佳选项。
第一节(共15小题；每小题2.5分，满分37.5分)
阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
[2021·长沙市高三统一模拟]If you'll be taking vacation time in the coming year and plan on flying, here are some useful tips for buying a cheap ticket.
When to buy
If you're going to buy tickets for domestic (国内的) flights, check prices on Tuesday afternoons. This is an old tip but still useful because most U．S. carriers continue to release sales on Tuesday morning, and competitors quickly drop their fares to match the better deals.
When to fly
Weekdays continue to be generally cheaper times to fly than weekends for most flights. In the U．S., the cheapest days are typically Tuesday, Wednesday and Saturday. A good itinerary (旅行计划) for the expensive U．S. spring break travel period is scheduled from Tuesday to Saturday; it will save you money (in most cases)．
Where to fly
We continue to see good deals to Boston and Denver and more and more nice prices to Chicago, Seattle and Washington, D．C.. As for Europe, there have been surprising deals throughout the fall and those will continue into the winter.
Direct flights vs connecting flights
Compare the price of direct flights with that of connecting flights. Sometimes adding a stop to your route will save you money, and it might be enough to endure the extra long flying day. An example: San Francisco to Raleigh: $553 for a direct flight, $362 with one stop.
You'd better think twice about the direct flight for San Francisco to Raleigh.
Compare, compare, compare
Stifle_the_impulse to go to your favorite airline site to purchase tickets without doing any comparison. Example: Let's say you want to fly from New York to London and figure your favorite U．S. legacy carrier will get you there for the best price—$554 for a round trip.
However, the comparison site also shows a cheaper flight from the same legacy carrier ($521). See what you're missing when you fail to do comparison?
1．When can you possibly find the best price for flights within the U．S.?
A．On Monday morning.
B．On Thursday afternoon.
C．On Tuesday morning.
D．On Sunday morning.
2．What does the underlined phrase “Stifle the impulse” probably mean?
A．Feel free to do something.
B．Suppress the desire to do something.
C．Get well prepared for something.
D．Make a quick decision on something.
3．Who is the text intended for?
A．Those who usually choose first class for their flights.
B．Those who want to find suggestions on where to fly.
C．Those who are travelling during the spring break.
D．Those who are looking for the best airline ticket prices.
CBD
【语篇解读】 本文是一篇应用文，讲述的是为乘飞机旅行的游客提供了一些有用的购买便宜机票的建议，包括注意购买的时间、出行时间、旅行目的地等。
1．答案与解析：C 考查细节理解。根据When to fly部分的第二句可知，在美国，买机票最便宜的日子通常是星期二、星期三和星期六，故C项正确。
2．答案与解析：B 考查词义猜测。根据画线短语所在部分的小标题可知，该部分是建议游客买机票时要作比较，并结合画线短语所在句可知，此句是说抑制住你不作任何比较就去你最喜欢的航空公司网站买机票的冲动。B项意为“抑制住做某事的欲望”，故B项符合文意。
3．答案与解析：D 考查推理判断。根据第一段可知，如果你明年要休假并打算乘飞机旅行，这里有一些有用的购买便宜机票的建议，故可推知，本文是写给那些寻找最佳机票价格的人，故D项正确。
B
[2021·福建省高三检测]We humans love to stare into our smart devices.We gaze for hours—about 10 hours and 39 minutes a day—at our computers，smartphones，tablets and televisions.Is all this staring bad for us？It might be，mainly because as we stare at our devices we are exposing ourselves to blue light.
Blue light is a type of electromagnetic radiation with a very short wavelength that produces a high amount of energy.While it's true that light can damage our eyes under certain circumstances，there's no scientific evidence suggesting that blue light is harmful to our eyes.But many people still think it is，which is why blue lightblocking glasses are so popular.So do the glasses work?
“Everyone is very concerned that blue light may be causing damage to the eye，but there's no evidence that it may be causing serious damage，” Dr.Rahul Khurana，clinical spokesman for the American Academy of Ophthalmology，told Business Insider.
Blue light exposure is nothing new.In fact，the sun is the largest source of blue light.Moreover，blue light is also present in LED lights.But if blue light isn't harmful，then why are we constantly rubbing our eyes when we're looking at our screens？The answer is eyestrain (眼疲劳)：More than 60 percent of people experience eye problems associated with digital eyestrain.And blue light，it seems，isn't the cause.Instead，our eyes are so strained because most of us blink less when we stare at our digital devices.So if eyestrain is the real issue，blue lightblocking glasses are probably of little use.
1．What do we know about blue light?
A．It is a kind of nuclear radiation.
B．It has the shortest wavelength.
C．It may come from electronic devices.
D．It consumes a great deal of energy.
2．What causes the popularity of blue lightblocking glasses?
A．Evidence of their benefits to eyes.
B．Belief in blue light's harmful effect.
C．Widespread use of smart devices.
D．Scientific understanding of blue light.
3．What can be inferred from Paragraph 4?
A．Blue light exposure is hardly avoidable.
B．Eye problems are not easy to deal with.
C．Blue light may connect with tired eyes.
D．Rubbing eyes makes people strained.
4．According to the text，wearing blue lightblocking glasses may be ________.
A．tiring B．harmful
C．useless D．Beneficial
CBAC
【语篇解读】 本文是一篇说明文。蓝光是一种波长非常短、能量巨大的电磁辐射。虽然在某些情况下光线确实会损伤我们的眼睛，但是并没有科学证据表明蓝光对我们的眼睛有害。不过许多人仍然认为蓝光有害，这就是防蓝光眼镜如此受欢迎的原因。
1．答案与解析：C 细节理解题。根据第一段最后一句话“It might be，mainly because as we stare at our devices we are exposing ourselves to blue light.”可知，我们在盯着电子设备的同时，就使自己暴露于蓝光下。故答案为C项“它可能来自电子设备”。
2．答案与解析：B 细节理解题。根据第二段第二句和第三句“While it's true that light can damage our eyes under certain circumstances, there's no scientific evidence suggesting that blue light is harmful to our eyes.But many people still think it is，which is why blue lightblocking glasses are so popular.”可知，虽然在某些情况下光线确实会损伤我们的眼睛，但是并没有科学证据表明蓝光对我们的眼睛有害。不过许多人仍然认为蓝光有害，这就是防蓝光眼镜如此受欢迎的原因。故选择B项。
3．答案与解析：A 推理判断题。根据第四段前三句“Blue light exposure is nothing new.In fact，the sun is the largest source of blue light. Moreover，blue light is also present in LED lights.”可知，蓝光照射并不罕见。事实上，太阳就是蓝光最大的来源。此外，蓝光也存在于LED灯中。也就是说蓝光照射几乎是不可避免的，答案为A项。
4．答案与解析：C 推理判断题。根据最后一段最后一句“So if eyestrain is the real issue，blue lightblocking glasses are probably of little use.”可知，如果眼疲劳才是真正的问题，那么防蓝光眼镜可能是无用的(useless)。
C
[2021·西安模拟]Instagram is about to take its biggest step toward removing likes from its platform. After months of testing an option to hide likes in select international markets, Instagram, which is owned by Facebook (FB), has already been testing hiding likes in seven other countries, including Canada, Ireland and Australia. For years, likes have been central to how celebrities, brands, politicians and everyday users experience Instagram and Facebook. It's a way of measuring popularity and success. But in recent months, Instagram has been rethinking how likes contribute to making its platform more toxic. Now it's considering a change.
The total number of likes on posts—which appear as hearts on the app—will disappear from Instagram's main feed, profile pages and permalink pages. The owner of the account can still see their own likes, but their followers won't know the count.
CNN Business previously spoke with users in countries with the test. The majority felt this move would improve wellbeing on the app. Instagram is the most detrimental social networking app for young people's mental health, such as negatively impacting body image, according to one study.
But other users and psychologists said hiding likes won't fix everything. The test doesn't address some of the key ways that activity on Instagram can impact the wellbeing of users, including bullying, feeling left out and thinking other people's lives are better than their own.
Renee Engeln, a psychology professor at Northwestern University, voiced his opinion that the biggest impact of Instagram is the content and the exposure to this constant stream of perfected images is what seems to hurt psychologically. Plus, users can still see their own likes—and feel badly if their posts don't perform well.
1．How do users usually experience Instagram for years?
A．By selecting platforms. B．By showing off talents.
C．By hiding likes. D．By giving likes.
2．What does the underlined word “detrimental” in Paragraph 3 mean?
A．Profitable. B．Popular.
C．Parmful. D．Positive.
3．What can we infer from the passage?
A．Instagram has affected youngsters' mental health.
B．The account owners won't know the count olikes.
C．Instagram tested hiding likes in seven countries first.
D．The majority think Instagram has been a wellbeing app.
4．What could be the best title of the passage?
A．Instagram Misuses Likes
B．More People Are Against Likes
C．Likes Cause Mental Problems
D．Likes will Be Hidden on Instagram
DCAD
语篇解读】 本文为说明文。Instagram即将迈出最大的一步，从它的平台上移除“点赞”。因为“点赞”让平台变得更“有毒”的，几个月来 Instagram一直尝试在一些国际市场隐藏“点赞”功能。
1．答案与解析：D 细节理解题。根据第一段中“For years, likes have been central to how celebrities, brands, politicians and everyday users experience Instagram and Facebook.” 多年来，“点赞”一直是名人、品牌商、政客和普通用户体验Instagram和Facebook的核心。由此可知，体验Instagram是通过点赞的形式，故选D。
2．答案与解析：C 词义猜测题。根据第三段“The majority felt this move would improve wellbeing on the app.”可知，大多数人认为移除点赞可以改善在这个应用上的舒适度。画线单词所在句子“Instagram is the most detrimental social networking app for young people's mental health, such as negatively impacting body image, according to one study.”可知，Instagram是对年轻人的心理健康最有影响的一种社交网络应用，比如能消极地影响一个人的身体形象，结合两句话可知，Instagram目前是有消极影响，能让用户产生不舒适感的社交网络，detrimental是来形容Instagram的特点的，应该是消极方面的词义，结合选项，只有选项C “有害的”，符合文意，故选C。
3．答案与解析：A 推理判断题。根据第三段“Instagram is the most detrimental social networking app for young people's mental health, such as negatively impacting body image, according to one study.”可知，根据研究表明，Instagram是对年轻人的心理健康最有害的一种社交网络应用，比如对身体形象产生负面影响。由此可推断出Instagram影响了青少年的心理健康。故选A。
4．答案与解析：D 主旨大意题。本文第一段叙述了Instagram即将迈出最大的一步，从它的平台上移除“点赞”。几个月来 Instagram一直尝试在一些国际市场隐藏“点赞”功能。接着下文具体分析了“点赞”造成的不好的影响，所以要在Instagram隐藏“点赞”功能。因此D项是最佳题目。故选D。
D
[2021·德州模拟]China's Mars rover, Tianwen1, will likely attempt to land at a site in northeastern Mars, according to a new paper published just days ahead of the mission's launch. The paper was written by team members of China's Tianwen1 Mars mission, which aims to send an orbiter and a rover to the Red Planet.
The study reveals new details about Tianwen1, outlining its intended landing area, science goals and the names of instruments aboard the spacecraft. It also stresses the historic nature of the mission: Not only is Tianwen1 China's first fully homegrown Mars mission, it's also the first to carry both an orbiter and a rover.
Tianwen1 means “questions to heaven” and was taken from the title of a poem by Qu Yuan (340—278 BC). The spacecraft will reach Mars in February 2021, at the same time as NASA's Perseverance rover and the United Arab Emirates' Hope orbiter launched on Sunday (July 19). However, China's rover will remain attached to the orbiter for two to three months before attempting its landing, according to the paper.
The chosen landing area is Utopia Planitia, a huge basin formed by a large impact far back in Mars' history that was also the region where NASA's Viking 2 lander touched down in 1976. China had isolated a part of the vast plain as a landing area, which means there will be more time and atmosphere for the entry spacecraft to slow down and safely land on the surface. The latitude is also suitable for receiving enough sunlight to power the 240 kilograms rover. The relatively smooth surface will also be helpful for roving. The mission also benefits from the engineering heritage of China's Chang'e lunar exploration program, the paper noted.
The Tianwen1 orbiter will operate in a polar orbit in order to map Mars. The rover will also investigate the surface soil characteristics and waterice distribution with its own Subsurface Exploration Radar. It will also analyze surface material composition and characteristics of the Martian climate and environment on the surface.
1．What's the purpose of the passage?
A．To lay out key details about Tianwen1.
B．To state how Tianwen1 was invented.
C．To stress the historic meaning of Tianwen1.
D．To analyze characteristics of the Martian climate.
2．What is most special about Tianwen1 according to Para. 2?
A．It was named after Qu Yuan, a famous poet in Chinese history.
B．It will reach Mars at the same time as NASA's Viking 2.
C．It will remain for 2 or 3 months on Mars.
D．It will complete orbiting and roving in a Mars mission.
3．Why is Utopia Planitia chosen as the landing area of Tianwen1?
A．The rare air there is suitable for the flight of Tianwen.
B．The area can protect Tianwen1 from too much sunlight.
C．It has relatively smooth surface, which is helpful for roving.
D．There is no spacecraft successfully landing there in history.
4．The last paragraph states mainly________.
A．Tianwen1's historic contributions
B．Tianwen1's new radar instruments
C．Tianwen1's academic advantages
D．Tianwen1's scientific goals
ADCD
【语篇解读】 这是一篇新闻报道。文章主要介绍了中国的火星漫游者“天问1号”可能会尝试在火星东北部的一个地点着陆，就在任务发射前几天发表的一篇新论文称。文中还揭示了天问1号的新细节，概述了它的预定着陆区域、科学目标和飞船上仪器的名称。
1．答案与解析：A 推理判断题。根据第二段中“The study reveals new details about Tianwen1, outlining its intended landing area, science goals and the names of instruments aboard the spacecraft.(这项研究揭示了天问1号的新细节，概述了它的预定着陆区域、科学目标和飞船上仪器的名称)”结合文章主要介绍了中国的火星漫游者“天问1号”可能会尝试在火星东北部的一个地点着陆，就在任务发射前几天发表的一篇新论文称。文中还揭示了天问1号的新细节，概述了它的预定着陆区域、科学目标和飞船上仪器的名称。可推知，这篇文章的目的是列出天问1号的关键细节。故选A。
2．答案与解析：D 推理判断题。根据第二段中“It also stresses the historic nature of the mission: Not only is Tianwen1 China's first fully homegrown Mars mission, it's also the first to carry both an orbiter and a rover.(它还强调了这次任务的历史性：天问1号不仅是中国第一个完全自主的火星任务，也是第一个同时携带轨道飞行器和探测车的任务)”可推知，天问1号最特别的地方是它将在火星任务中完成环绕和漫游。故选D。
3．答案与解析：C 细节理解题。根据倒数第二段中“China had isolated a part of the vast plain as a landing area, which means there will be more time and atmosphere for the entry spacecraft to slow down and safely land on the surface. The latitude is also suitable for receiving enough sunlight to power the 240 kilograms rover. The relatively smooth surface will also be helpful for roving. (中国已经将这片广阔的平原的一部分隔离出来作为着陆点，这意味着将有更多的时间和大气层让飞船减速并安全着陆在火星表面。这个纬度也适合接受足够的阳光，为240公斤重的火星车提供动力。相对光滑的表面也将有助于漫游)”可知，选择乌托邦平原作为“天问1号”的着陆点，是因为它表面比较光滑，有利于漫游。故选C。
4．答案与解析：D 主旨大意题。根据最后一段“The Tianwen1 orbiter will operate in a polar orbit in order to map Mars. The rover will also investigate the surface soil characteristics and waterice distribution with its own Subsurface Exploration Radar. It will also analyze surface material composition and characteristics of the Martian climate and environment on the surface.(天问1号轨道飞行器将在极轨道上运行，以绘制火星地图。探测车还将利用自己的地下探测雷达调查地表土壤特征和水冰分布。它还将分析火星表面物质的组成以及火星表面气候和环境的特征)”可知，最后一段主要阐述了“天问1号”的科学目标。故选D。
Ⅱ.七选五
Get a Healthy Home
[2021·山东省德州市名校联考]Most of us have spent more time at home in 2020 than we ever imagined possible. _1__ These tips can help make your home better for your body and mind.
Take off your shoes at your door. Think about keeping your home clean the minute you walk in. A University of Arizona study found that the average shoe contains nearly 421,000 different bacteria(细菌), including Escherichia coil and strep. Pesticides (杀虫剂) and cleaning chemicals can also come into your home via your shoes. __2__
Freshen the walls. If the walls in your home feel as if they're closing in, maybe it's time to find a new coat of paint. _3 __ Researchers at the University of British Columbia found that blue boosts creativity, while red increases attention to detail.
__4__ In a small study，volunteers worked from noon to 8 p．m. in a room lit primarily by daylight or one lit primarily by artificial light. By the end of the second day, those who had worked in the sunlit room were less sleepy and performed better on performance tests connected with mental process.
Clean the air in your home. __5__ The Department of Energy requires that it can remove 99.97 percent of pollutants and particles in the air. Portable highefficiency particulate air filters(过滤器)can clean a single room or the entire house.
A．Work near a window.
B．Study in the artificial light.
C．Studies have shown that color can influence your mood.
D．Maybe you have realized the importance of a healthy home.
E．Leave a pair of shoes you wear in the house by the front door.
F．A highefficiency particulate air (HEPA) filter can cost much
G．The gold standard is a highefficiency particulate air (HEPA) filter.
DECAG
【语篇解读】 本文是一篇说明文。介绍了四种可以使家庭环境变得更健康的方式。
1．答案与解析：D 逻辑分析题。本题考查考生理解段内过渡句的能力。上文讲在2020年，我们大多数人都在家里度过了很长的时间；下文讲这里有一些可以使你的家变得更适合你的身体和心灵(成长)的方法。D项“或许你已经意识到一个健康的家庭(环境)的重要性了”承上启下，符合语境。故选D。
2．答案与解析：E 逻辑分析题。本题考查考生理解段内衔接关系的能力。根据本段第一 句“Take off your shoes at your door.”可推知，本段陈述的是在屋内换鞋的必要性。E项“在家门口留一双你在家中穿的鞋子”符合语境。故选E。
3．答案与解析：C 例证题。本题考查考生理解段内例证句的能力。上文讲如果你家里的墙壁让你有种包围感，也许是时候选一种新的墙漆了；下文具体解释了红蓝两种颜色的具体影响。C项“研究表明，颜色可以影响你的心情”承上启下，符合语境。故选C。
4．答案与解析：A 主旨题。本题考查考生总结归纳的能力。下文讲一项小调查表明，与人工灯源相比，在自然光源下工作的人们没那么困倦，且他们在与心理过程有关的测试中表现得更出色。由此可推知，本段内容应与“在自然光源下工作”有关。A项“在窗边工作”符合语境。故选A。
5．答案与解析：G 逻辑分析题。本题考查考生理解段内句子之间逻辑关系的能力。上文讲清洁你的房子中的空气；下文讲能源部门表示它可以移除空气中99.97%的污染物和微粒。高效的空气过滤器可以清洁一个单人间或整个房子。G项“这个黄金标准就是一个高效率的空气微粒过滤器”承上启下，符合语境。故选G。
Ⅱ.完形填空
[2021·潍坊市高三下学期二模]Hansen and his 10yearold son Chase search the streets of Salt Lake City every weekend for the homeless to take to lunch. They started Project Empathy (同情) four years ago to __1__ a meal, listen to their stories and figured out how they could __2__ help.
“Just start with a smile, a hello. It really just starts with that. If you do it, you can make a connection. A small gesture can have a __3__ impact on others less fortunate，” Hansen __4__ in an interview.
Some of these shared meals have turned into stronger __5__. Ward, a homeless, was __6__ in a flat. He credited the Hansens with helping him __7__ the difficult process of moving off the streets. “It is great to have friends who make us feel __8__ and I'm impressed with the pair，” Ward said.
Father and son's __9__ have developed into a passion project that __10__ faith and community, which emphasizes the __11__ community members can have in uplifting the homeless. They know they can't settle the homeless __12__ alone. They're hoping empathy will __13__.
“My hope for the future is to __14__ more connection across our country. We could and we will succeed __15__ we have other people join in and help the homeless，” Chase said.
1．A.buy B．cook C．share D．eat
2．A.often B．further C．also D．even
3．A.dramatic B．different C．minimum D．decisive
4．A.remarked B．praised C．joked D．quoted
5．A.desires B．connections C．motivations D．opinions
6．A.provided B．permitted C．abandoned D．housed
7．A.through B．for C．despite D．to
8．A.surprised B．relaxed C．awesome D．calm
9．A.dreams B．influences C．experiences D．efforts
0．A.assesses B．compares C．highlights D．respects
11．A.importance B．task C．chance D．role
12．A.argument B．problem C．debt D．conflict
13．A.go away B．catch on C．fade out D．give off
14．A.spread B．miss C．exchange D．maintain
15．A.before B．if C．until D．So
CBAAB DACDC DBBAB
【语篇解读】 本文是一篇记叙文。文章主要叙述了Hansen父子创办同情项目帮助无家可归的人的故事。他们希望更多的人加入到他们的计划中来。
1．答案与解析：C 考查动词辨析。A项意为“买”；B项意为“烹饪”；C项意为“分享”；D项意为“吃”。根据空格前一句“Hansen and his 10yearold son Chase search the streets of Salt Lake City every weekend for the homeless to take to lunch.”和第三段第一句中的“Some of these shared meals”可推知，他们创办这个项目是为了分享食物。故选C。
2．答案与解析：B 考查副词辨析。A项意为“经常”；B项意为“进一步”；C项意为“也，而且”；D项意为“甚至”。根据语境可知，他们给无家可归的人带午饭，除了带午饭，他们还在其他方面给予帮助。因此，此处指他们还弄清如何能进一步帮助这些无家可归的人。故选B。
3．答案与解析：A 考查形容词辨析。A项意为“巨大的，给人印象深刻的”；B项意为“不同的”；C项意为“最低的，最小的”；D项意为“决定性的”。根据空格前的“A small gesture”并结合常识可知，一个小小的举动可以对其他不幸的人产生巨大的影响。故选A。
4．答案与解析：A 考查动词辨析。A项意为“评论，说起”；B项意为“表扬”；C项意为“开玩笑”；D项意为“引用”。根据上文Hansen所说的话可知，他在一次采访中说了这些话。故选A。
5．答案与解析：B 考查名词辨析。A项意为“欲望，愿望”；B项意为“联系，关联”；C项意为“动机”；D项意为“意见”。根据第二段第三句“If you do it, you can make a connection.”和第三段最后一句中的“‘It is great to have friends who make us feel __8__’”可知，其中一些共享的食物已经变成了更强的联系。故选B。
6．答案与解析：D 考查动词辨析。A项意为“提供”；B项意为“允许”；C项意为“放弃”；D项意为“给(某人)提供住处”。根据空格后一句“He credited the Hansens with helping him ____ the difficult process of moving off the streets.”可知，Ward无家可归，Hansen父子给他在一个公寓里提供了住所。故选D。
7．答案与解析：A 考查介词辨析。A项意为“经历，度过”；B项意为“为了”；C项意为“尽管”；D项意为“给”。根据语境可知，Ward感谢Hansen父子帮助他度过了离开街道的艰难过程。故选A。
8．答案与解析：C 考查形容词辨析。A项意为“惊讶的”；B项意为“放松的”；C项意为“很好的”；D项意为“镇定的”。根据空格前的“It is great to have friends”并结合语境可知，有Hansen父子这样的朋友让Ward感觉很棒，他们给Ward留下了深刻的印象。故选C。
9．答案与解析：D 考查名词辨析。A意为“梦想”；B项意为“影响”；C项意为“经历”；D项意为“努力”。根据上文可知，Hansen父子帮助无家可归的人。由此可推知，此处指父子俩经过努力已经将共情项目发展成为一个充满激情的项目。故选D。
10．答案与解析：C 考查动词辨析。A项意为“评估”；B项意为“比较”；C项意为“强调，突出”；D项意为“尊敬”。根据空格后的“emphasizes the ____ community members can have in uplifting the homeless”并结合语境可知，这个充满激情的项目强调信任和社区的理念。故选C。
11．答案与解析：D 考查名词辨析。A项意为“重要性”；B项意为“任务”；C项意为“机会”；D项意为“角色，作用”。根据语境并结合常识可知，该项目强调社区成员在帮助无家可归的人方面所发挥的作用。故选D。
12．答案与解析：B 考查名词辨析。A项意为“争论”；B项意为“问题”；C项意为“债务”；D项意为“冲突”。根据空格前的“settle”并结合语境可知，Hansen父子知道单靠他们两个人不能解决无家可归的人的问题。故选B。
13．答案与解析：B 考查动词短语辨析。A项意为“走开”；B项意为“受欢迎，流行起来”；C项意为“(声音)渐弱，(画面)淡出”；D项意为“发出(光等)”。根据空格前一句“They know they can't settle the homeless _52__ alone.”可知，Hansen父子知道单靠他们两个人不能解决无家可归的人的问题。他们希望人们都能拥有同情心。故选B。
14．答案与解析：A 考查动词辨析。A项意为“传播”；B项意为“错过，想念”；C项意为“交换”；D项意为“保持”。根据_54___空格后一句中的“we have other people join in and help the homeless”可知，Chase希望未来能有更多人帮助无家可归的人，即传播更多的联系。故选A。
15．答案与解析：B 考查连词辨析。A项意为“在……之前”；B项意为“如果”；C项意为“直到……为止”；D项意为“因此”。根据语境可知，Chase说：“如果我们让其他人参加这个项目，帮助无家可归的人，我们就会成功。”故选B。
Ⅲ.语法填空
Polar bears are undergoing hunger in a world 1.________ (warm) than ever before.
Polar bears live in the environment too cold for most animals. For most of the year, they live and hunt on Arctic sea ice. Nature has prepared 2.________ (they) for the cold conditions. But nothing has prepared the bears for the danger 3.________ threatens their only home.
Polar bears' world is melting. Studies show that polar ice 4.________ (reduce) by 9.8% every 10 years since 1978. Now about 20，000 to 25，000 polar bears live in the Arctic. Polar bears depend 5.________ sea ice for their 6.________ (survive). “Sea ice is more than just the platform that the bears walk over，” says Andrew Derocher, 7.________ scientist who studies North American polar bear populations. “Without it, they can't exist.”
8.________ (melt) and refreezing of polar ice is natural. But in a warmer world, the cycle speeds up, and polar bears have less time 9.________ (hunt). Normally, they have three months in the spring when they gain more weight. The extra fat will be used, when the bears are not 10.________ (active) hunting.
1．warmer 2．them 3．that/which 4．has reduced 5．on/upon
6．survival 7．a 8．Melting 9．to hunt 10．actively
【语篇解读】 本文是一篇说明文。北极熊生活在寒冷的北极地区，但是它们生活的地方正在慢慢融化。研究显示，自1978年以来，极地冰每10年减少9.8%。一位科学家认为，如果没有海冰，北极熊将无法生存。
1．答案与解析：warmer 考查比较级。修饰名词world，应用形容词，由后面的than可知，应用比较级。
2．答案与解析：them 考查代词。此处作prepared的宾语，指前面提到的Polar bears，应用them。
3．答案与解析：that/which 考查定语从句。此处是限定性定语从句，先行词是the danger，指物，在从句中作主语，应用关系代词that或which引导。
4．答案与解析：has reduced 考查动词时态。根据since 1978可知，应用现在完成时，主语是polar ice，为不可数名词，助动词使用has。
5．答案与解析：on/upon 考查介词。固定搭配depend on/upon意为“依靠，依赖”。
6．答案与解析：survival 考查名词。前面有形容词性物主代词，此处应用名词survival，表示“生存，存活”，不可数。
7．答案与解析：a 考查冠词。此处泛指“一个科学家”，且scientist以辅音音素开头，应用不定冠词a。
8．答案与解析：Melting 考查非谓语动词。此处与and后的refreezing是并列成分，作主语，应用动名词。
9．答案与解析：to hunt 考查非谓语动词。固定搭配have time to do sth.“有时间做某事”，不定式作定语。
10．答案与解析：actively 考查副词。修饰动词hunting，应用副词actively“积极地”，作状语。
Ⅲ.应用文写作
第一节 (满分 15分)
[2021·济南市高三针对性训练]假定你是李华，你的英国笔友Frank来信询问你关于新冠疫情中复学的情况，请根据以下要点给他写一封回信：
1．表达感谢；
2．介绍你的情况(学习、生活等)；
3．表示关心。
注意：
1．词数80左右；
2．可适当增加细节，以使行文连贯；
3．开头和结尾已给出，不计入总词数。
Dear Frank，
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Yours，
Li Hua
第一节 （满分15分）
Dear Frank,
I'm deeply appreciate your concern about my current study. Now, I'm writing to share with you my present situation.
Due to the outbreak of the epidemic, the starting date of the spring semester has been put off until April 15. Now, we are studying in the smaller classes in our school, each of which is composed of no more than 25 students. Each of my fellow classmates is fully devoted to study and shows great discipline to prepare for the upcoming College Entrance Examination. In response to the current policy, we wear protective masks every day to protect ourselves from getting infected. In addition, we also maintain healthy eating and good habits.
What about your situation? I hope you take good care of yourself. Looking forward to your reply.
Yours，
Li Hua
Unit 4 【单元测试 · 提升卷】
(满分：150分 时间：120分钟)
第一部分 听力(共两节，满分30分)
第一节(共5小题；每小题1.5分，满分 7.5分)
听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
1.What do we know about Alex?
A.He caused the computer problem.
B.He needs help.
C.He can solve the computer problem.
2.Why does the man feel sorry for the woman?
A.Because she had a difficult travel.
B.Because she missed the Carnival.
C.Because he failed to meet her earlier.
3.How will the speakers travel?
A.By boat. B.By train. C.By air.
4.What is the man going to do first?
A.Finish his writing. B.Have supper. C.Watch TV.
5.What are the speakers talking about?
A.Their children. B.Their favourite color. C.A jacket.
第二节（共15小题；每小题1.5分，满分22.5分）
听下面5段对话或独白,每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。
听第6段材料，回答第6~8小题。
6.Whose birthday is it?
A.Stella’s. B.Don’s. C.Kit’s.
7.Why can’t the girl come and play?
A.Her aunt won’t allow her to.
B.She has to help her mother.
C.She lives too far away.
8.What do we know about Liz?
A.She works in a sweetshop.
B.She has two brothers.
C.She is a newborn baby.
听第7段材料，回答第9~11小题。
9.Where are the speakers?
A.At home. B.In a hospital. C.In an office.
10.Why doesn’t the man sleep well?
A.His cough is particularly bad at night.
B.He has to prepare for the conference.
C.He has got a fever.
11.Why doesn’t the man go to the clinic?
A.He is having a meeting. B.He is too busy to go there.
C.He can take care of himself.
听第8段材料，回答第12~14小题。
12.What are the speakers talking about?
A.Hotels. B.Vacation plans. C.Dreams.
13.Where will the woman stay in Seattle?
A.In her cousin’s. B.In a hotel. C.In her parents’.
14.When will the woman leave for her holiday?
A.Next Friday. B.Next Wednesday. C.A week later.
听第9段材料，回答第15~17小题。
15.Where is the man going?
A.The Plaza Hotel. B.Madison Street. C.Park Street.
16.Why does the driver suggest Park Street?
A.Because there is heavy traffic in Madison Street.
B.Because it is the fastest way.
C.Because there is a traffic jam ahead in Madison Street.
17.Which way do they finally take?
A.Madison Street. B.Park Street. C.50th Street.
听第10段材料，回答第18~20小题。
18.Where do most British people prefer to spend the Easter holiday?
A.On the continent. B.In Britain. C.All around the world.
19.What does the British want to enjoy during the holiday?
A.The airport service. B.The showers. C.The sun.
20.What’s the weather going to be like on the continent during the holiday?
A.Cold and windy. B.Low temperature. C.Rainy.
答案及听力原文
答案：1~5 CBABC 6~10 CBCCA 11~15 BBABA 16~20 ACACB
听力原文：
Text 1
W:Our computer isn’t working well.It crashed five times today.
M:I’ll go and visit my friend Alex tomorrow.
Text 2
W:I would have come back a week earlier，but the weather was so bad that we couldn’t travel.
M:That’s a real pity.The Carnival lasted a fortnight and only finished yesterday.
Text 3
M:I’ll pick you up at a quarter to eleven tomorrow morning.
W:How long will the journey last?
M:It’s a three and a half hours’ drive.And we should give ourselves forty minutes to have lunch，and another ten to wait for the ferry.
Text 4
M:Mum，my favourite TV show is on this evening.
W:But first you must finish your writing.
M:You promised to help me.
W:No problem.But supper is ready now.
Text 5
M:That’s a nice jacket.I really like the design and the colour.
W:It’s my son’s.He got it as a birthday present.
M:It’s a bit large，isn’t it?
W:Large?You just can’t imagine what a giant he is.
Text 6
M:Hi，you’re new here，aren’t you?What’s your name?
W:Stella.
M:Want to come and play?
W:I’d like to，but I can’t.My mum says I’ve got to stay and help her.It’s my brother’s birthday and we’re having a party.
M:Oh，you’ve got a brother，have you?
W:I’ve got two brothers.Kit，the one with the birthday，is only fourteen.I’ve got a big brother who’s married.His name’s Don.
M:Does your brother Don live near here?
W:Yes，not very far away.Cath—that’s his wife—works in the sweetshop over there.They’ve got a new baby called Liz.I mean Elizabeth really，but we call her Liz.
M:Is that your mum over there calling you?
W:No，that’s my Aunt May，my mum’s sister.I’d better go.Bye.
M:Bye.
Text 7
W:Morning.
M:Morning.
W:But...but how are you today?You don’t look very well.
M:I’m not.I have a sore throat，and I cough，especially at night.So I can’t sleep very well.
W:Oh!Have you got a temperature?
M:Yeah，I’ve got a fever.
W:Um，I think you’ve got the flu.I suggest you take a day off and go back home to have a good rest.
M:Sounds great.But I have to prepare my speech for the conference.You know，it’s only five days from now.And yesterday they asked me for the summary.
W:Did you go to the clinic?
M:I had no time for it and there’s no way until I finish the summary.
W:Take your time and take good care of yourself.
M:Sure.Thank you.
Text 8
M:Hi，Betty，where are you going for your vacation?
W:Seattle.I’ve been wanting to go there for ages.
M:Now your dream will come true.When are you off?
W:Next Wednesday evening.
M:How are you getting to the airport?Is anybody seeing you off?
W:Yes，my brother will go with me to the airport to see me off.We’ll take a taxi.My plane takes off at 8：30.
M:Are you staying in a hotel in Seattle?Hotels there are particularly expensive and it’s hard to book one at this time of a year.
W:No，not necessary.My cousin lives there and I’m staying with her.What about you?Are you going anywhere?
M:Yeah.I’m going to New York on Friday with my parents.
W:How are you getting there?By train?
M:No，by plane.
W:How long are you staying there?
M:It all depends.Maybe a week.See you when we get back.Have a nice time in Seattle.
W:Good luck.Have a nice trip.
Text 9
W:Where do you want to go?
M:Would you please take me uptown?I’m going to the Plaza Hotel.
W:Do you want to go up Madison Street?
M:Is that the fastest way?I’m in a hurry.
W:The traffic is very heavy on Madison Street now.
M:What other way can you go?
W:I can take Park Street.
M:All right.
W:There’s a traffic jam up ahead.
M:In that case，turn left at the next traffic light.
W:OK.I’ll go west on 50th Street.
M:Thanks.I don’t want to be late.
Text 10
Airports are reporting heavy business as thousands of people set off on their Easter holidays.A number of airlines say there’s been a big last-minute rush and British Airways are expecting record bookings with more than twenty thousand passengers flying to the continent today.But holiday-makers may not find the sun they’re seeking.Reports from European resorts are not encouraging.In most places，the temperature is only in the mid-fifties.Even so，that’s better than in Britain.The forecasters here say it’s going to be cold and windy today，with wintry showers at times.But there will be some sunny intervals.
第二部分 阅读理解(共两节，满分50分)
第一节 (共15小题；每小题2.5分，满分37.5分)
阅读下列短文，从每题所给的A、B、C和D四个选项中选出最佳选项。
第一节(共15小题；每小题2.5分，满分37.5分)
阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
[2021·长沙市高三统一模拟]If you'll be taking vacation time in the coming year and plan on flying, here are some useful tips for buying a cheap ticket.
When to buy
If you're going to buy tickets for domestic (国内的) flights, check prices on Tuesday afternoons. This is an old tip but still useful because most U．S. carriers continue to release sales on Tuesday morning, and competitors quickly drop their fares to match the better deals.
When to fly
Weekdays continue to be generally cheaper times to fly than weekends for most flights. In the U．S., the cheapest days are typically Tuesday, Wednesday and Saturday. A good itinerary (旅行计划) for the expensive U．S. spring break travel period is scheduled from Tuesday to Saturday; it will save you money (in most cases)．
Where to fly
We continue to see good deals to Boston and Denver and more and more nice prices to Chicago, Seattle and Washington, D．C.. As for Europe, there have been surprising deals throughout the fall and those will continue into the winter.
Direct flights vs connecting flights
Compare the price of direct flights with that of connecting flights. Sometimes adding a stop to your route will save you money, and it might be enough to endure the extra long flying day. An example: San Francisco to Raleigh: $553 for a direct flight, $362 with one stop.
You'd better think twice about the direct flight for San Francisco to Raleigh.
Compare, compare, compare
Stifle_the_impulse to go to your favorite airline site to purchase tickets without doing any comparison. Example: Let's say you want to fly from New York to London and figure your favorite U．S. legacy carrier will get you there for the best price—$554 for a round trip.
However, the comparison site also shows a cheaper flight from the same legacy carrier ($521). See what you're missing when you fail to do comparison?
1．When can you possibly find the best price for flights within the U．S.?
A．On Monday morning.
B．On Thursday afternoon.
C．On Tuesday morning.
D．On Sunday morning.
2．What does the underlined phrase “Stifle the impulse” probably mean?
A．Feel free to do something.
B．Suppress the desire to do something.
C．Get well prepared for something.
D．Make a quick decision on something.
3．Who is the text intended for?
A．Those who usually choose first class for their flights.
B．Those who want to find suggestions on where to fly.
C．Those who are travelling during the spring break.
D．Those who are looking for the best airline ticket prices.
CBD
【语篇解读】 本文是一篇应用文，讲述的是为乘飞机旅行的游客提供了一些有用的购买便宜机票的建议，包括注意购买的时间、出行时间、旅行目的地等。
1．答案与解析：C 考查细节理解。根据When to fly部分的第二句可知，在美国，买机票最便宜的日子通常是星期二、星期三和星期六，故C项正确。
2．答案与解析：B 考查词义猜测。根据画线短语所在部分的小标题可知，该部分是建议游客买机票时要作比较，并结合画线短语所在句可知，此句是说抑制住你不作任何比较就去你最喜欢的航空公司网站买机票的冲动。B项意为“抑制住做某事的欲望”，故B项符合文意。
3．答案与解析：D 考查推理判断。根据第一段可知，如果你明年要休假并打算乘飞机旅行，这里有一些有用的购买便宜机票的建议，故可推知，本文是写给那些寻找最佳机票价格的人，故D项正确。
B
[2021·福建省高三检测]We humans love to stare into our smart devices.We gaze for hours—about 10 hours and 39 minutes a day—at our computers，smartphones，tablets and televisions.Is all this staring bad for us？It might be，mainly because as we stare at our devices we are exposing ourselves to blue light.
Blue light is a type of electromagnetic radiation with a very short wavelength that produces a high amount of energy.While it's true that light can damage our eyes under certain circumstances，there's no scientific evidence suggesting that blue light is harmful to our eyes.But many people still think it is，which is why blue lightblocking glasses are so popular.So do the glasses work?
“Everyone is very concerned that blue light may be causing damage to the eye，but there's no evidence that it may be causing serious damage，” Dr.Rahul Khurana，clinical spokesman for the American Academy of Ophthalmology，told Business Insider.
Blue light exposure is nothing new.In fact，the sun is the largest source of blue light.Moreover，blue light is also present in LED lights.But if blue light isn't harmful，then why are we constantly rubbing our eyes when we're looking at our screens？The answer is eyestrain (眼疲劳)：More than 60 percent of people experience eye problems associated with digital eyestrain.And blue light，it seems，isn't the cause.Instead，our eyes are so strained because most of us blink less when we stare at our digital devices.So if eyestrain is the real issue，blue lightblocking glasses are probably of little use.
1．What do we know about blue light?
A．It is a kind of nuclear radiation.
B．It has the shortest wavelength.
C．It may come from electronic devices.
D．It consumes a great deal of energy.
2．What causes the popularity of blue lightblocking glasses?
A．Evidence of their benefits to eyes.
B．Belief in blue light's harmful effect.
C．Widespread use of smart devices.
D．Scientific understanding of blue light.
3．What can be inferred from Paragraph 4?
A．Blue light exposure is hardly avoidable.
B．Eye problems are not easy to deal with.
C．Blue light may connect with tired eyes.
D．Rubbing eyes makes people strained.
4．According to the text，wearing blue lightblocking glasses may be ________.
A．tiring B．harmful
C．useless D．Beneficial
CBAC
【语篇解读】 本文是一篇说明文。蓝光是一种波长非常短、能量巨大的电磁辐射。虽然在某些情况下光线确实会损伤我们的眼睛，但是并没有科学证据表明蓝光对我们的眼睛有害。不过许多人仍然认为蓝光有害，这就是防蓝光眼镜如此受欢迎的原因。
1．答案与解析：C 细节理解题。根据第一段最后一句话“It might be，mainly because as we stare at our devices we are exposing ourselves to blue light.”可知，我们在盯着电子设备的同时，就使自己暴露于蓝光下。故答案为C项“它可能来自电子设备”。
2．答案与解析：B 细节理解题。根据第二段第二句和第三句“While it's true that light can damage our eyes under certain circumstances, there's no scientific evidence suggesting that blue light is harmful to our eyes.But many people still think it is，which is why blue lightblocking glasses are so popular.”可知，虽然在某些情况下光线确实会损伤我们的眼睛，但是并没有科学证据表明蓝光对我们的眼睛有害。不过许多人仍然认为蓝光有害，这就是防蓝光眼镜如此受欢迎的原因。故选择B项。
3．答案与解析：A 推理判断题。根据第四段前三句“Blue light exposure is nothing new.In fact，the sun is the largest source of blue light. Moreover，blue light is also present in LED lights.”可知，蓝光照射并不罕见。事实上，太阳就是蓝光最大的来源。此外，蓝光也存在于LED灯中。也就是说蓝光照射几乎是不可避免的，答案为A项。
4．答案与解析：C 推理判断题。根据最后一段最后一句“So if eyestrain is the real issue，blue lightblocking glasses are probably of little use.”可知，如果眼疲劳才是真正的问题，那么防蓝光眼镜可能是无用的(useless)。
C
[2021·西安模拟]Instagram is about to take its biggest step toward removing likes from its platform. After months of testing an option to hide likes in select international markets, Instagram, which is owned by Facebook (FB), has already been testing hiding likes in seven other countries, including Canada, Ireland and Australia. For years, likes have been central to how celebrities, brands, politicians and everyday users experience Instagram and Facebook. It's a way of measuring popularity and success. But in recent months, Instagram has been rethinking how likes contribute to making its platform more toxic. Now it's considering a change.
The total number of likes on posts—which appear as hearts on the app—will disappear from Instagram's main feed, profile pages and permalink pages. The owner of the account can still see their own likes, but their followers won't know the count.
CNN Business previously spoke with users in countries with the test. The majority felt this move would improve wellbeing on the app. Instagram is the most detrimental social networking app for young people's mental health, such as negatively impacting body image, according to one study.
But other users and psychologists said hiding likes won't fix everything. The test doesn't address some of the key ways that activity on Instagram can impact the wellbeing of users, including bullying, feeling left out and thinking other people's lives are better than their own.
Renee Engeln, a psychology professor at Northwestern University, voiced his opinion that the biggest impact of Instagram is the content and the exposure to this constant stream of perfected images is what seems to hurt psychologically. Plus, users can still see their own likes—and feel badly if their posts don't perform well.
1．How do users usually experience Instagram for years?
A．By selecting platforms. B．By showing off talents.
C．By hiding likes. D．By giving likes.
2．What does the underlined word “detrimental” in Paragraph 3 mean?
A．Profitable. B．Popular.
C．Parmful. D．Positive.
3．What can we infer from the passage?
A．Instagram has affected youngsters' mental health.
B．The account owners won't know the count olikes.
C．Instagram tested hiding likes in seven countries first.
D．The majority think Instagram has been a wellbeing app.
4．What could be the best title of the passage?
A．Instagram Misuses Likes
B．More People Are Against Likes
C．Likes Cause Mental Problems
D．Likes will Be Hidden on Instagram
DCAD
语篇解读】 本文为说明文。Instagram即将迈出最大的一步，从它的平台上移除“点赞”。因为“点赞”让平台变得更“有毒”的，几个月来 Instagram一直尝试在一些国际市场隐藏“点赞”功能。
1．答案与解析：D 细节理解题。根据第一段中“For years, likes have been central to how celebrities, brands, politicians and everyday users experience Instagram and Facebook.” 多年来，“点赞”一直是名人、品牌商、政客和普通用户体验Instagram和Facebook的核心。由此可知，体验Instagram是通过点赞的形式，故选D。
2．答案与解析：C 词义猜测题。根据第三段“The majority felt this move would improve wellbeing on the app.”可知，大多数人认为移除点赞可以改善在这个应用上的舒适度。画线单词所在句子“Instagram is the most detrimental social networking app for young people's mental health, such as negatively impacting body image, according to one study.”可知，Instagram是对年轻人的心理健康最有影响的一种社交网络应用，比如能消极地影响一个人的身体形象，结合两句话可知，Instagram目前是有消极影响，能让用户产生不舒适感的社交网络，detrimental是来形容Instagram的特点的，应该是消极方面的词义，结合选项，只有选项C “有害的”，符合文意，故选C。
3．答案与解析：A 推理判断题。根据第三段“Instagram is the most detrimental social networking app for young people's mental health, such as negatively impacting body image, according to one study.”可知，根据研究表明，Instagram是对年轻人的心理健康最有害的一种社交网络应用，比如对身体形象产生负面影响。由此可推断出Instagram影响了青少年的心理健康。故选A。
4．答案与解析：D 主旨大意题。本文第一段叙述了Instagram即将迈出最大的一步，从它的平台上移除“点赞”。几个月来 Instagram一直尝试在一些国际市场隐藏“点赞”功能。接着下文具体分析了“点赞”造成的不好的影响，所以要在Instagram隐藏“点赞”功能。因此D项是最佳题目。故选D。
D
[2021·德州模拟]China's Mars rover, Tianwen1, will likely attempt to land at a site in northeastern Mars, according to a new paper published just days ahead of the mission's launch. The paper was written by team members of China's Tianwen1 Mars mission, which aims to send an orbiter and a rover to the Red Planet.
The study reveals new details about Tianwen1, outlining its intended landing area, science goals and the names of instruments aboard the spacecraft. It also stresses the historic nature of the mission: Not only is Tianwen1 China's first fully homegrown Mars mission, it's also the first to carry both an orbiter and a rover.
Tianwen1 means “questions to heaven” and was taken from the title of a poem by Qu Yuan (340—278 BC). The spacecraft will reach Mars in February 2021, at the same time as NASA's Perseverance rover and the United Arab Emirates' Hope orbiter launched on Sunday (July 19). However, China's rover will remain attached to the orbiter for two to three months before attempting its landing, according to the paper.
The chosen landing area is Utopia Planitia, a huge basin formed by a large impact far back in Mars' history that was also the region where NASA's Viking 2 lander touched down in 1976. China had isolated a part of the vast plain as a landing area, which means there will be more time and atmosphere for the entry spacecraft to slow down and safely land on the surface. The latitude is also suitable for receiving enough sunlight to power the 240 kilograms rover. The relatively smooth surface will also be helpful for roving. The mission also benefits from the engineering heritage of China's Chang'e lunar exploration program, the paper noted.
The Tianwen1 orbiter will operate in a polar orbit in order to map Mars. The rover will also investigate the surface soil characteristics and waterice distribution with its own Subsurface Exploration Radar. It will also analyze surface material composition and characteristics of the Martian climate and environment on the surface.
1．What's the purpose of the passage?
A．To lay out key details about Tianwen1.
B．To state how Tianwen1 was invented.
C．To stress the historic meaning of Tianwen1.
D．To analyze characteristics of the Martian climate.
2．What is most special about Tianwen1 according to Para. 2?
A．It was named after Qu Yuan, a famous poet in Chinese history.
B．It will reach Mars at the same time as NASA's Viking 2.
C．It will remain for 2 or 3 months on Mars.
D．It will complete orbiting and roving in a Mars mission.
3．Why is Utopia Planitia chosen as the landing area of Tianwen1?
A．The rare air there is suitable for the flight of Tianwen.
B．The area can protect Tianwen1 from too much sunlight.
C．It has relatively smooth surface, which is helpful for roving.
D．There is no spacecraft successfully landing there in history.
4．The last paragraph states mainly________.
A．Tianwen1's historic contributions
B．Tianwen1's new radar instruments
C．Tianwen1's academic advantages
D．Tianwen1's scientific goals
ADCD
【语篇解读】 这是一篇新闻报道。文章主要介绍了中国的火星漫游者“天问1号”可能会尝试在火星东北部的一个地点着陆，就在任务发射前几天发表的一篇新论文称。文中还揭示了天问1号的新细节，概述了它的预定着陆区域、科学目标和飞船上仪器的名称。
1．答案与解析：A 推理判断题。根据第二段中“The study reveals new details about Tianwen1, outlining its intended landing area, science goals and the names of instruments aboard the spacecraft.(这项研究揭示了天问1号的新细节，概述了它的预定着陆区域、科学目标和飞船上仪器的名称)”结合文章主要介绍了中国的火星漫游者“天问1号”可能会尝试在火星东北部的一个地点着陆，就在任务发射前几天发表的一篇新论文称。文中还揭示了天问1号的新细节，概述了它的预定着陆区域、科学目标和飞船上仪器的名称。可推知，这篇文章的目的是列出天问1号的关键细节。故选A。
2．答案与解析：D 推理判断题。根据第二段中“It also stresses the historic nature of the mission: Not only is Tianwen1 China's first fully homegrown Mars mission, it's also the first to carry both an orbiter and a rover.(它还强调了这次任务的历史性：天问1号不仅是中国第一个完全自主的火星任务，也是第一个同时携带轨道飞行器和探测车的任务)”可推知，天问1号最特别的地方是它将在火星任务中完成环绕和漫游。故选D。
3．答案与解析：C 细节理解题。根据倒数第二段中“China had isolated a part of the vast plain as a landing area, which means there will be more time and atmosphere for the entry spacecraft to slow down and safely land on the surface. The latitude is also suitable for receiving enough sunlight to power the 240 kilograms rover. The relatively smooth surface will also be helpful for roving. (中国已经将这片广阔的平原的一部分隔离出来作为着陆点，这意味着将有更多的时间和大气层让飞船减速并安全着陆在火星表面。这个纬度也适合接受足够的阳光，为240公斤重的火星车提供动力。相对光滑的表面也将有助于漫游)”可知，选择乌托邦平原作为“天问1号”的着陆点，是因为它表面比较光滑，有利于漫游。故选C。
4．答案与解析：D 主旨大意题。根据最后一段“The Tianwen1 orbiter will operate in a polar orbit in order to map Mars. The rover will also investigate the surface soil characteristics and waterice distribution with its own Subsurface Exploration Radar. It will also analyze surface material composition and characteristics of the Martian climate and environment on the surface.(天问1号轨道飞行器将在极轨道上运行，以绘制火星地图。探测车还将利用自己的地下探测雷达调查地表土壤特征和水冰分布。它还将分析火星表面物质的组成以及火星表面气候和环境的特征)”可知，最后一段主要阐述了“天问1号”的科学目标。故选D。
Ⅱ.七选五
Get a Healthy Home
[2021·山东省德州市名校联考]Most of us have spent more time at home in 2020 than we ever imagined possible. _1__ These tips can help make your home better for your body and mind.
Take off your shoes at your door. Think about keeping your home clean the minute you walk in. A University of Arizona study found that the average shoe contains nearly 421,000 different bacteria(细菌), including Escherichia coil and strep. Pesticides (杀虫剂) and cleaning chemicals can also come into your home via your shoes. __2__
Freshen the walls. If the walls in your home feel as if they're closing in, maybe it's time to find a new coat of paint. _3 __ Researchers at the University of British Columbia found that blue boosts creativity, while red increases attention to detail.
__4__ In a small study，volunteers worked from noon to 8 p．m. in a room lit primarily by daylight or one lit primarily by artificial light. By the end of the second day, those who had worked in the sunlit room were less sleepy and performed better on performance tests connected with mental process.
Clean the air in your home. __5__ The Department of Energy requires that it can remove 99.97 percent of pollutants and particles in the air. Portable highefficiency particulate air filters(过滤器)can clean a single room or the entire house.
A．Work near a window.
B．Study in the artificial light.
C．Studies have shown that color can influence your mood.
D．Maybe you have realized the importance of a healthy home.
E．Leave a pair of shoes you wear in the house by the front door.
F．A highefficiency particulate air (HEPA) filter can cost much
G．The gold standard is a highefficiency particulate air (HEPA) filter.
DECAG
【语篇解读】 本文是一篇说明文。介绍了四种可以使家庭环境变得更健康的方式。
1．答案与解析：D 逻辑分析题。本题考查考生理解段内过渡句的能力。上文讲在2020年，我们大多数人都在家里度过了很长的时间；下文讲这里有一些可以使你的家变得更适合你的身体和心灵(成长)的方法。D项“或许你已经意识到一个健康的家庭(环境)的重要性了”承上启下，符合语境。故选D。
2．答案与解析：E 逻辑分析题。本题考查考生理解段内衔接关系的能力。根据本段第一 句“Take off your shoes at your door.”可推知，本段陈述的是在屋内换鞋的必要性。E项“在家门口留一双你在家中穿的鞋子”符合语境。故选E。
3．答案与解析：C 例证题。本题考查考生理解段内例证句的能力。上文讲如果你家里的墙壁让你有种包围感，也许是时候选一种新的墙漆了；下文具体解释了红蓝两种颜色的具体影响。C项“研究表明，颜色可以影响你的心情”承上启下，符合语境。故选C。
4．答案与解析：A 主旨题。本题考查考生总结归纳的能力。下文讲一项小调查表明，与人工灯源相比，在自然光源下工作的人们没那么困倦，且他们在与心理过程有关的测试中表现得更出色。由此可推知，本段内容应与“在自然光源下工作”有关。A项“在窗边工作”符合语境。故选A。
5．答案与解析：G 逻辑分析题。本题考查考生理解段内句子之间逻辑关系的能力。上文讲清洁你的房子中的空气；下文讲能源部门表示它可以移除空气中99.97%的污染物和微粒。高效的空气过滤器可以清洁一个单人间或整个房子。G项“这个黄金标准就是一个高效率的空气微粒过滤器”承上启下，符合语境。故选G。
Ⅱ.完形填空
[2021·潍坊市高三下学期二模]Hansen and his 10yearold son Chase search the streets of Salt Lake City every weekend for the homeless to take to lunch. They started Project Empathy (同情) four years ago to __1__ a meal, listen to their stories and figured out how they could __2__ help.
“Just start with a smile, a hello. It really just starts with that. If you do it, you can make a connection. A small gesture can have a __3__ impact on others less fortunate，” Hansen __4__ in an interview.
Some of these shared meals have turned into stronger __5__. Ward, a homeless, was __6__ in a flat. He credited the Hansens with helping him __7__ the difficult process of moving off the streets. “It is great to have friends who make us feel __8__ and I'm impressed with the pair，” Ward said.
Father and son's __9__ have developed into a passion project that __10__ faith and community, which emphasizes the __11__ community members can have in uplifting the homeless. They know they can't settle the homeless __12__ alone. They're hoping empathy will __13__.
“My hope for the future is to __14__ more connection across our country. We could and we will succeed __15__ we have other people join in and help the homeless，” Chase said.
1．A.buy B．cook C．share D．eat
2．A.often B．further C．also D．even
3．A.dramatic B．different C．minimum D．decisive
4．A.remarked B．praised C．joked D．quoted
5．A.desires B．connections C．motivations D．opinions
6．A.provided B．permitted C．abandoned D．housed
7．A.through B．for C．despite D．to
8．A.surprised B．relaxed C．awesome D．calm
9．A.dreams B．influences C．experiences D．efforts
0．A.assesses B．compares C．highlights D．respects
11．A.importance B．task C．chance D．role
12．A.argument B．problem C．debt D．conflict
13．A.go away B．catch on C．fade out D．give off
14．A.spread B．miss C．exchange D．maintain
15．A.before B．if C．until D．So
CBAAB DACDC DBBAB
【语篇解读】 本文是一篇记叙文。文章主要叙述了Hansen父子创办同情项目帮助无家可归的人的故事。他们希望更多的人加入到他们的计划中来。
1．答案与解析：C 考查动词辨析。A项意为“买”；B项意为“烹饪”；C项意为“分享”；D项意为“吃”。根据空格前一句“Hansen and his 10yearold son Chase search the streets of Salt Lake City every weekend for the homeless to take to lunch.”和第三段第一句中的“Some of these shared meals”可推知，他们创办这个项目是为了分享食物。故选C。
2．答案与解析：B 考查副词辨析。A项意为“经常”；B项意为“进一步”；C项意为“也，而且”；D项意为“甚至”。根据语境可知，他们给无家可归的人带午饭，除了带午饭，他们还在其他方面给予帮助。因此，此处指他们还弄清如何能进一步帮助这些无家可归的人。故选B。
3．答案与解析：A 考查形容词辨析。A项意为“巨大的，给人印象深刻的”；B项意为“不同的”；C项意为“最低的，最小的”；D项意为“决定性的”。根据空格前的“A small gesture”并结合常识可知，一个小小的举动可以对其他不幸的人产生巨大的影响。故选A。
4．答案与解析：A 考查动词辨析。A项意为“评论，说起”；B项意为“表扬”；C项意为“开玩笑”；D项意为“引用”。根据上文Hansen所说的话可知，他在一次采访中说了这些话。故选A。
5．答案与解析：B 考查名词辨析。A项意为“欲望，愿望”；B项意为“联系，关联”；C项意为“动机”；D项意为“意见”。根据第二段第三句“If you do it, you can make a connection.”和第三段最后一句中的“‘It is great to have friends who make us feel __8__’”可知，其中一些共享的食物已经变成了更强的联系。故选B。
6．答案与解析：D 考查动词辨析。A项意为“提供”；B项意为“允许”；C项意为“放弃”；D项意为“给(某人)提供住处”。根据空格后一句“He credited the Hansens with helping him ____ the difficult process of moving off the streets.”可知，Ward无家可归，Hansen父子给他在一个公寓里提供了住所。故选D。
7．答案与解析：A 考查介词辨析。A项意为“经历，度过”；B项意为“为了”；C项意为“尽管”；D项意为“给”。根据语境可知，Ward感谢Hansen父子帮助他度过了离开街道的艰难过程。故选A。
8．答案与解析：C 考查形容词辨析。A项意为“惊讶的”；B项意为“放松的”；C项意为“很好的”；D项意为“镇定的”。根据空格前的“It is great to have friends”并结合语境可知，有Hansen父子这样的朋友让Ward感觉很棒，他们给Ward留下了深刻的印象。故选C。
9．答案与解析：D 考查名词辨析。A意为“梦想”；B项意为“影响”；C项意为“经历”；D项意为“努力”。根据上文可知，Hansen父子帮助无家可归的人。由此可推知，此处指父子俩经过努力已经将共情项目发展成为一个充满激情的项目。故选D。
10．答案与解析：C 考查动词辨析。A项意为“评估”；B项意为“比较”；C项意为“强调，突出”；D项意为“尊敬”。根据空格后的“emphasizes the ____ community members can have in uplifting the homeless”并结合语境可知，这个充满激情的项目强调信任和社区的理念。故选C。
11．答案与解析：D 考查名词辨析。A项意为“重要性”；B项意为“任务”；C项意为“机会”；D项意为“角色，作用”。根据语境并结合常识可知，该项目强调社区成员在帮助无家可归的人方面所发挥的作用。故选D。
12．答案与解析：B 考查名词辨析。A项意为“争论”；B项意为“问题”；C项意为“债务”；D项意为“冲突”。根据空格前的“settle”并结合语境可知，Hansen父子知道单靠他们两个人不能解决无家可归的人的问题。故选B。
13．答案与解析：B 考查动词短语辨析。A项意为“走开”；B项意为“受欢迎，流行起来”；C项意为“(声音)渐弱，(画面)淡出”；D项意为“发出(光等)”。根据空格前一句“They know they can't settle the homeless _52__ alone.”可知，Hansen父子知道单靠他们两个人不能解决无家可归的人的问题。他们希望人们都能拥有同情心。故选B。
14．答案与解析：A 考查动词辨析。A项意为“传播”；B项意为“错过，想念”；C项意为“交换”；D项意为“保持”。根据_54___空格后一句中的“we have other people join in and help the homeless”可知，Chase希望未来能有更多人帮助无家可归的人，即传播更多的联系。故选A。
15．答案与解析：B 考查连词辨析。A项意为“在……之前”；B项意为“如果”；C项意为“直到……为止”；D项意为“因此”。根据语境可知，Chase说：“如果我们让其他人参加这个项目，帮助无家可归的人，我们就会成功。”故选B。
Ⅲ.语法填空
Polar bears are undergoing hunger in a world 1.________ (warm) than ever before.
Polar bears live in the environment too cold for most animals. For most of the year, they live and hunt on Arctic sea ice. Nature has prepared 2.________ (they) for the cold conditions. But nothing has prepared the bears for the danger 3.________ threatens their only home.
Polar bears' world is melting. Studies show that polar ice 4.________ (reduce) by 9.8% every 10 years since 1978. Now about 20，000 to 25，000 polar bears live in the Arctic. Polar bears depend 5.________ sea ice for their 6.________ (survive). “Sea ice is more than just the platform that the bears walk over，” says Andrew Derocher, 7.________ scientist who studies North American polar bear populations. “Without it, they can't exist.”
8.________ (melt) and refreezing of polar ice is natural. But in a warmer world, the cycle speeds up, and polar bears have less time 9.________ (hunt). Normally, they have three months in the spring when they gain more weight. The extra fat will be used, when the bears are not 10.________ (active) hunting.
1．warmer 2．them 3．that/which 4．has reduced 5．on/upon
6．survival 7．a 8．Melting 9．to hunt 10．actively
【语篇解读】 本文是一篇说明文。北极熊生活在寒冷的北极地区，但是它们生活的地方正在慢慢融化。研究显示，自1978年以来，极地冰每10年减少9.8%。一位科学家认为，如果没有海冰，北极熊将无法生存。
1．答案与解析：warmer 考查比较级。修饰名词world，应用形容词，由后面的than可知，应用比较级。
2．答案与解析：them 考查代词。此处作prepared的宾语，指前面提到的Polar bears，应用them。
3．答案与解析：that/which 考查定语从句。此处是限定性定语从句，先行词是the danger，指物，在从句中作主语，应用关系代词that或which引导。
4．答案与解析：has reduced 考查动词时态。根据since 1978可知，应用现在完成时，主语是polar ice，为不可数名词，助动词使用has。
5．答案与解析：on/upon 考查介词。固定搭配depend on/upon意为“依靠，依赖”。
6．答案与解析：survival 考查名词。前面有形容词性物主代词，此处应用名词survival，表示“生存，存活”，不可数。
7．答案与解析：a 考查冠词。此处泛指“一个科学家”，且scientist以辅音音素开头，应用不定冠词a。
8．答案与解析：Melting 考查非谓语动词。此处与and后的refreezing是并列成分，作主语，应用动名词。
9．答案与解析：to hunt 考查非谓语动词。固定搭配have time to do sth.“有时间做某事”，不定式作定语。
10．答案与解析：actively 考查副词。修饰动词hunting，应用副词actively“积极地”，作状语。
Ⅲ.应用文写作
第一节 (满分 15分)
[2021·济南市高三针对性训练]假定你是李华，你的英国笔友Frank来信询问你关于新冠疫情中复学的情况，请根据以下要点给他写一封回信：
1．表达感谢；
2．介绍你的情况(学习、生活等)；
3．表示关心。
注意：
1．词数80左右；
2．可适当增加细节，以使行文连贯；
3．开头和结尾已给出，不计入总词数。
Dear Frank，
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Yours，
Li Hua
第一节 （满分15分）
Dear Frank,
I'm deeply appreciate your concern about my current study. Now, I'm writing to share with you my present situation.
Due to the outbreak of the epidemic, the starting date of the spring semester has been put off until April 15. Now, we are studying in the smaller classes in our school, each of which is composed of no more than 25 students. Each of my fellow classmates is fully devoted to study and shows great discipline to prepare for the upcoming College Entrance Examination. In response to the current policy, we wear protective masks every day to protect ourselves from getting infected. In addition, we also maintain healthy eating and good habits.
What about your situation? I hope you take good care of yourself. Looking forward to your reply.
Yours，
Li Hua
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