(人教版)2019届高考英语一轮复习练习案：选修八 Unit 2 (含解析)

选修八 Unit 2[基础回顾]Ⅰ.单句语法填空(导学号02516340)1．The students are forbidden, unless they have special passes, 　to stay　 (stay) out after 11 p．m.2．He has a strong objection to 　smoking　 (smoke) in public places, especially with females present.3．Why bother 　going/to go　 (go) abroad to study, when there are so many good universities at home?4．Our strength is from many sources, but most of all, we owe our success 　to　 the creativity of our people.5．　Struck　 (strike) by strong snowstorms, the area faced severe water and electricity shortage.6．The best way to undertake big projects is 　to force　 (force) them into your schedule.7．I have a sweet tooth and can't resist 　eating　 (eat) chocolate and ice cream.8．Do you know any 　differences　 (differ) between British English and American English?9．Living in the central Australian desert has its problems, of which 　obtaining　 (obtain) water is not the least.10．We had our furniture moved to the new house when the 　decoration　 (decorate) of the house is finished.Ⅱ.单句改错(每句一错)(导学号02516341)1．You can go swimming in condition that you don't go too far from the river bank.　in→on　2．Some rules should be made to forbid students of smoking.　of→from　3．It suddenly struck to me that we ought to make a new plan.　去掉第一个to或struck→occurred　4．No one knows exact how the earth began as it happened so long ago.　exact→exactly　5．Owe to a lack of funds, the project will not continue next year.　Owe→Owing　Ⅲ.佳句写作(导学号02516342)1．这张桌子的问题是放在我们屋里太大了。(The problem of ...is that...)答案：The problem of the desk is that it's too big for our room.2．我们决不会推迟这个计划的执行。(on no condition放在句首)答案：On no condition will we put off carrying out the plan.3．据报道，在那个国家很多工人在罢工。(be on strike)答案：It is reported that many workers are on strike in that country.4．那对孪生兄弟在性格方面互不相同。(differ)答案：The twins differ from each other in character.5．我反对别人那样跟我说话。(object to)答案：I object to being spoken to like that.[技能提升]Ⅰ.阅读理解(导学号02516343)(2018·唐山模拟)A new method of delivering data, which uses the visible spectrum (光谱)  rather than radio waves, has been tested in a working office.Li­fi can deliver Internet access 100 times faster than traditional Wi­fi, offering speeds of up to 1 Gbps (gigabit per second). It requires a light source, such as a standard LED bulb, an Internet connection and a photo detector.It was tested this week using a Li­fi­enabled light bulb to transmit data at the speed of 1 Gbps. Laboratory tests have shown theoretical speeds of up to 224 Gpbs. When tested in an office, it allowed workers to access the Internet and in an industrial space，where it provided a smart lighting solution. Chief executive  Deepak Solanki  said  that  the technology could reach consumers “within three or four years”．The term Li­fi was first coined by Prof. Haas, who  demonstrated  the  technology  at  a  Ted conference in 2011. His talk, which has now been watched nearly two million times, showed an LED lamp streaming video. Prof. Haas described a future when billions of light bulbs could become wireless hot spots.One of the big advantages of Li­fi is the fact that, unlike Wi­fi, it does not interfere with other radio signals, so could be used on aircraft and in other places where interference is an issue.However,  the   technology   also   has   its drawbacks－most notably the fact that it cannot be used outdoors in direct sunlight, because that would interfere with its signal. Neither can the technology travel through walls so initial use is likely to be limited to some places.[语篇解读]　本文是一篇说明文。本文主要是向读者介绍了一种被称作Li­fi的新的传播数据的方式。1．Which of the following will be the best title of this passage?A．The drawbacks of traditional Wi­fiB．The advantages of Li­fiC．Li­fi 100 times faster than Wi­fiD．Li­fi and Wi­fi解析：C　[主旨大意题。通读全文内容可判断出，本文主要介绍了一种被称作Li­fi的新的传播数据的方式，它的传播速度比Wi­fi快一百倍。故选C。]2．Which of the following statements is TRUE?A．Traditional Wi­fi can reach speeds of up to 1 Gbps.B．The new technology has been put into use by consumers.C．Deepak Solanki showed the new technology at a conference in 2011.D．Li­fi can't be used without a light source, an Internet connection or a photo detector.解析：D　[细节理解题。根据第二段中的“It requires a light source，such as a standard LED bulb，an Internet connection and a photo detector.”可知，D项所述内容正确。故选D。]3．This passage may be 　________　.A．a piece of newsB．a science fictionC．a fashion magazineD．a product brochure解析：A　[推理判断题。根据本文内容可判断。本文主要是向读者介绍了一种被称作Li­fi的新的传播数据的方式。由此可推断出，本文最有可能是一则新闻。]Ⅱ.阅读填句(七选五)(导学号02516344)根据短文内容，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。(2018·安徽合肥第二次质量检测)Everybody  knows the importance of drinking enough water. As we all know，drinking water benefits your skin，muscles and organs.　__1__　The major reason for that is related to human biological needs. When you're a baby，you're 75 percent water. Then，as the years get higher，you get drier. 　__2__　 It helps you lose weight, according to a study from the University of Birmingham.The researchers found that drinking 500 ml of water thirty minutes before a meal helped participants lose 10 more pounds than those who did not. 　__3__　 All participants were advised to improve their diet and physical activity levels. 84 overweight adults were involved. Among them 41 were told to “preload” with water，while 43 were told to control their water intake before eating. After 12 weeks，the participants instructed to “preload” with water lost 2.87 pounds more than those in the control group on average. In addition, the participants preloading with water before each of their three main meals every day lost 9.48 pounds over the 12 weeks. 　__4__　Dr. Helen Parretti, a lecturer at the University of Birmingham，had this to say of the study: 　__5__　 Just drinking 500 ml of water, three times a day, before your main meals may help reduce your weight... and this could be an easy way for weight loss. Furthermore, it can be significant for an individual to lose extra weight, making  a  potential  contribution  to  public health.A．Another reason to drink water is right here.B．The study began with a weight management consultation.C．The beauty of these findings is that losing weight is simple.D．But not everyone can get access to tap water in some areas.E．It also helps prevent certain diseases and improve your mood.F．In contrast, those preloading once a day or never, lost just 1.76 pounds.G．So kids should drink more water instead of coke to keep healthy.[语篇解读]　本文讲述了一个研究发现：三餐前喝水有助于减肥。1．解析：E　[根据上句“众所周知，喝水对你的皮肤、肌肉和器官有好处”可知，空处指喝水的另一个好处，故选E项“它还能帮助你预防某些疾病，改善心情”。E项中的It指代上文中的“drinking water”。]2．解析：A　[根据本段开头的“The major reason for that”和下文内容可知，空处讲的是喝水的另一个原因。故选A“饮水的另一原因在这儿”。]3．解析：B　[本段讲述研究结果“饭前半小时喝水可以帮助减肥”。空处应选B项“这项研究始于一个体重咨询”引出下文实验的具体过程。]4．解析：F　[根据上句“另外，每天三餐前都喝水的实验者12周期间减掉了9.48磅”可知，选F项，与空前一句进行对比，即“相反，那些一天只在一顿饭前喝水或不喝水的人只减掉了1.76磅”。]5．解析：C　[根据空前的“had this to say of the study”和上文的实验可知，选C“这些发现的美好之处在于(告诉我们)减肥很简单”。]Ⅲ.语法填空(导学号02516345)(2018·银川检测)From Monday to Friday, most people are busy working or studying, but in the evenings and on weekends they are free to relax and enjoy 1.　________　 (they). Some watch TV 2.　________　go to the cinema. Others take part in sports. There are many different ways 3.　________　(spend) their spare time.Almost everyone has some kind of hobbies. It may be anything from collecting stamps to 4.　________　 (make) model airplanes. Some hobbies are expensive, 5.　________　others don't cost anything at all. Some 6.　________　(collect) are worth a lot of money. Others are valuable only to the owners.I know 7.　________　man who has a coin collection worth $250. He was very happy about his purchase and 8.　________　(think) the price was reasonable. On the other hand, my youngest brother collects matchboxes. He has almost 600 of them but I doubt if they are worth any money. However，to my brother they are 9.　________　(extreme) valuable. Nothing makes him 10.　________　(happy) than to find a new matchbox for his collection.This is what a hobby means, I guess. It is something we like to do in our spare time simply for fun. The value in dollars is not important. We do it for the pleasure it gives.答案：1.themselves　2.or　3.to spend　4.making5．but/while　6.collections　7.a　8.thought9．extremely　10.happier