外研版 (2019)选择性必修 第四册Unit 5 Into the unknown精品课后练习题

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（练习解析版）
I：单词拼写
The army was frced t r___________ (后退) after suffering heavy lsses.
【答案】retreat
If yu give up exercise, yur muscles s ___________ (萎缩) and fat increases. By the same tken (同样地), if yu expend mre energy yu will lse fat.
【答案】shrink
The next i ___________ (调查) will determine what has really happened.
【答案】investigatin
A grup f explrers set ff int the cuntry’s u___________ (地图未标明的) interir.
【答案】uncharted
All the members present at the meeting agreed t d___________ (探究) int each f these in detail.
【答案】 delve
It is anther law f nature that nly a habit can s ___________ (克制) anther habit.
【答案】subdue
Yu are perfectly crrect in trying t s___________ (引导) yur mther tward increased independence.
【答案】 steer
The tw thieves made their g ___________ (逃跑) n a stlen mtrcycle.
【答案】getaway
At the current rate f decline, many f the rain frest animals culd becme e___________ (灭绝的) in less than 10 years.
【答案】extinct
He cllected pristine samples f the m_________ (陨石) just days after they fell n the frzen lake.
【答案】 meterite
II：单句语法填空
___________ he can finish this task in time is still a questin.
【答案】Whether
【解析】Whether引导的主语从句，与表语信息词a questin呼应一致。
He has made it clear ___________ he will nt give up taking part in the activity.
【答案】that
【解析】本语境中，it为形式宾语，that引导的宾语从句为真正宾语后置。
__________ the delayed flight will take ff depends much n the weather later n.
【答案】When
【解析】When引导主语从句，引导词在从句作时间状语。
As is knwn t us, a slim straw shws __________ way the wind blws.
【答案】which
【解析】which引导宾语从句，which作定语修饰way, which way表示“哪一条路/哪个方向”。
In such a case, I will insist n _________ I think is right.
【答案】what
【解析】what引导宾语从句，引导词what充当从句的主语，其中I think为插入语。
T practice as much as pssible is ________ the secret lies, which is true.
【答案】where
【解析】where 引导表语从句，引导词where 充当从句的地点状语。
This curisity led them, fr instance, ___________ (discver) the use f fire.
【答案】t discver
【解析】固定结构lead sb t d sth 意为: 引导某人去做某事。
_____________ (increasing), it is the back part f the brain invlved with ur visin.
【答案】Increasingly
【解析】用副词修饰整个句子，表示“越来越多地，日益增长地”
___________ (date) back t a time when ur ancestrs were running fr their lives frm dangers.
【答案】Dating
【解析】动名词短语充当句子的主语。 date back t 意为：追溯到；回到...（时间）。
The gvernment set ut _________ (destry) the rganizatin rt and branch.
【答案】t destry
【解析】固定结构set ut t d sth 表示开始着手做某事。
III. 语法填空
When smething strange r unfair happens, the flight instinct can kick in. Often, making a quick getaway is ___1___ sensible and understandable natural respnse, dating back t a time when ur ancestrs were running fr their lives ___2___ dangers, such as wild animals, lightning and fire. S while yu may ___3___ (tempt) t check ut a strange bject r t test the waters f a new situatin, it can be safer t steer clear f the unfamiliar.
____4____, nt everyne chses t fllw this instinct. Instead f retreating t their caves, sme f ur ancestrs chse t subdue their fears and pursue the unknwn--and this ____5____ (curius) led them t, fr instance, discver the use f fire.
In mre recent times, Nrwegian explrer, Rald Amundsn ____6_____ (endure) ne f the mst hstile envirnments n Earth when he set ut int uncharged territry t reach the Suth Ple.
These ____7____ (reactin) help humankind delve int the unknwn and advance twards a mre prgressive and civilized sciety. Of curse, explratin desn’t have t mean ____8____ (blind) thrwing urselves int the unknwn, and it’s never wrng t think twice ____9____ taking actin. While there is n need fr us ____10____ (shrink) frm new situatins, we shuld always lk int things first and cnsider ur ptins.
【答案】
IV. 阅读理解
阅读下面短文，从每题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。
Mst f us still have lts f phtgraphs sitting arund frm the days when we used cameras, nt telephnes, t take pictures. There are prbably many phts that we d nt lk at and may never see again. But these images, representing memries frm ur past, d nt have t be lst. Ggle has created a tl t help bring these frgtten pictures back t life in very high quality.
The PhtScan app wrks the same as an image scanner . But this sftware prgram uses the camera n yur phne t capture images as digital cpies, which is a quick and easy way t save ld phts withut having t spend mney n new equipment. The PhtScan app uses new technlgy t imprve the capturing prcess, which makes it pssible t take a picture f a pht with a camera phne, withut glare, a cmmn prblem.
After pening the app, the user first puts the desired pht within the camera’s frame. When this is dne, fur small circles appear in different places ver the pht. The user then mves the phne ver each f the circles, which change clr after the prcess cmpletes. That’s it! The app finds the edges f the pht, straightens the image, and puts it in the right psitin while remving glare. Frm this pint, the pictures can easily be saved t the Ggle Phts app r smewhere else. If yu d have Ggle Phts, images are rganized by face r place and can easily be fund.
The release f PhtScan came at the same time as sme changes t the Ggle Phts app. One change is an imprved aut tl that Ggle says creates high-quality effects in just ne step. Anther tl lets users chse frm 12 different lks t imprve verall pht quality. The third prvides high-level cntrls fr changing light and clrs.
Anil Sabharwal, the Vice President f Ggle Phts, explained why he created PhtScan. In 1947, his parents lived under British clnial rule in India and were rdered t leave their hme with nly a few belngings. They decided t leave behind jewelry and ther valuables, but gathered up as many phts as they culd take.
1. What can we knw abut the PhtScan app?
A.Users can use it t take digital phts.
B. It is new equipment used t scan images.
C. Using it t phtgraph pictures wn’t have glare.
D. It can adjust the angle f cameras by mving fur small circles.
2. What is the advantage f Ggle Phts accrding t the passage?
A. It stres mst pictures captured by PhtScan.
B. The changed strage space is bigger than befre.
C. It prvides varius styles that users can select frm t imprve the apps.
D. Users can easily find the desired picture thrugh the phtgraphing place.
3. What can we infer abut Anil Sabharwal frm the last paragraph?
A. His parents helped him a lt while in India.
B. British clnial rule frced him t make PhtScan.
C. His family’s pverty prmted him t create PhtScan.
D. He gt the idea fr PhtScan frm his family’s experiences.
4. The purpse f the passage is t _______________.
A. persuade us t use the PhtScan app
B. ffer sme suggestins fr Ggle t imprve its new app
C. tell us a new Ggle app that brings ld phtgraphs back t life
D. remind us f the pictures representing memries frm ur past
【答案】CDDC
【解析】本文为说明文，介绍一款由Ggle创建的Pht Scan app, 这款app使用了新技术来改进拍摄过程并且能帮助恢复一些老照片，。
【1】根据问题的关键词 PhtScan app定位信息，信息在第二段，根据最后一句：The PhtScan app uses new technlgy t imprve the capturing prcess, which makes it pssible t take a picture f a pht with a camera phne, withut glare, a cmmn prblem.PhtScan应用程序使用了新技术来改进拍摄过程，这使得用有拍照功能的手机拍摄照片成为可能，而没有眩光glare，而glare眩光一个常见的问题。故答案C正确
【2】根据问题的关键词 Ggle Phts 定位信息，信息在第二段，根据最后一句：If yu d have Ggle Phts, images are rganized by face r place and can easily be fund（如果你确实有 Ggle Phts，图像是按面孔或地点组织的，很容易找到。）所以答案为D
【3】根据最后一段可知，Anil Sabharwa解释他为什么创建了这个 PhtScan，是因为他父母当时宁愿不要珠宝和其他值钱的东西，也要带走尽可能多的照片。由此可知他创办 PhtScan的想法来源于他的家人经历，故选D。
【4】本文是一篇说明文，介绍一款由Ggle创建的Pht Scan app, 这款app 能帮助恢复一些老照片，所以答案为C。
V. 书面表达
写一篇摘要: 阅读下面的文章，用不超过60个单词的篇幅总结文章大意和要点。
Scttish summers set t keep getting warmer, study shws
Cld, wet summers culd becme a thing f the past in Sctland, accrding t a new study. Researchers frm Edinburgh and Oxfrd universities and the Met Office, the UK’s fficial weather service, say that summer temperatures f 30°C culd becme cmmn in the future because f climate change.
Climate change is lng-term changes in the wrld’s weather patterns, including rising temperatures. Human activities such as burning fssil fuels (cal, il and natural gas), farming and cutting dwn frests are a majr cause f changing weather patterns arund the wrld. When fssil fuels are burned, fr example, they release gases such as carbn dixide int the atmsphere. These gases are called greenhuse gases. Their emissins cntribute t climate change.
Peple experienced ht and dry cnditins during a heatwave in the summer f 2018. The team fund that climate change wuld lead t thse cnditins becming mre frequent in Sctland. Lead researcher Prfessr Simn Tett, frm Edinburgh University, said that carbn dixide emissins had t be cut arund the wrld in rder t prevent this frm getting wrse.
The study als lked int the direct effects f the unusual weather in 2018 n peple, animals and landscapes in Sctland. Amng these were a thirty per cent increase in demand fr water, an increase in harmful insects such as flies and msquites, and a fall in the amunt f peas, ptates, carrts and nins that were harvested. The ppulatins f sme types f birds declined because f a lack f water. There was als disturbance t trains because rails were bent by the heat.
Tett explained, “Despite its cl climate, Sctland must start t prepare nw fr the impact f high temperature extremes. The bttm line is that heatwaves have becme mre likely because f the climate change caused by human activities.”
【参考答案】
A study shws that Sctland is expected t have htter and drier summers due t glbal climate change resulting frm harmful human activities like greenhuse gases emissin. Mrever, it reveals that the dryness and htness f 2018 summer directly caused disastrus cnsequences t creatures, vegetatin and transprtatin in Sctland. Actins shuld be taken befre things get wrse. 1 a
2 frm
3 be tempted
4 Hwever
5 curisity
6 endured
7 reactins
8 blindly
9 befre
10 t shrink