2017届高考英语（重庆专用）二轮精练：选修8 unit2 period 2

　　Unit 2 Cloning Period 2 Learning about Language & Using Language 同步精练（人教版选修8，重庆专用）

　　Ⅰ.短语填空

　　1．He________ the course of struggle in his book.

　　2．Too much work and too little rest often________illness.

　　3．The city was burnt down. It could hardly be__________ life.

　　4．Now，let's________the next question.

　　5．Keepers said the pandas were ____________.

　　6．I telephoned to my parents____________during I studied in college.

　　7．The word “cancer” still________terror________many people's________.

　　8．The bad habit____________affect your health.

　　9．The football game__________a tie.

　　10．We tried____________to make him change his mind.

　　答案　1.looked back on　2.lead to　3.brought back to4．pass on to　5.in good condition　6.from time to time 7．strikes；into；hearts　8.is bound to　9.ended in

　　10．in vain

　　Ⅱ.完成句子

　　1．不必为这封信操心，这不是急信。(bother about)

　　________ ________ ________the letter, it's not urgent.

　　2．采收劳动果实的喜悦不时流露在他们的脸上。(from time to time)

　　The joy of harvesting can be seen on their face________ ________ ________ ________.

　　3．你越努力，进步就越快。(the＋比较级，the＋比较级)

　　________ ________you work，________ ________progress you will get.

　　4．即使太阳从西边出，我对你的爱也不会变。(虚拟语气)

　　If the sun________ ________ ________in the west，my love for you________ ________ ________.

　　5．这是因为有许多粗心大意之人。(表语从句)

　　________ ________ ________there are many careless and thoughtless people.

　　答案　1.Don't

　　bother

　　about　2.from

　　time

　　to

　　time　3.The

　　harder；the

　　more　4.were

　　to

　　rise；would

　　not

　　change　5.This

　　is

　　because

　　Ⅲ.单项填空1．—We could invite John and Barbara to the Friday night party.

　　—Yes，________？ I'll give them a call right now.

　　A．why not

　　B．what for

　　C．why

　　D．what

　　解析　考查情景交际。根据I'll give them a call right now.可知第二个说话者同意第一个人的提议。why not？“为什么不呢”可表示同意他人的建议。故选A。

　　答案　A

　　2．A terrible flood________the areas along the Changjiang River this summer.

　　A．strike

　　B．strict

　　C．struck

　　D．stick

　　解析　句意：今年夏天，一场可怕的洪灾袭击了长江沿岸地区。由句意知该句用一般过去式，strike的过去式为struck。

　　答案　C

　　3．His girlfriend couldn't resist________him about his family background.

　　A．to ask

　　B．asking

　　C．ask

　　D．about asking

　　解析　can't resist doing sth禁不住做某事。句意：他的女朋友禁不住问到他的家庭背景。

　　答案　B

　　4．You don't have to be angry. He________wanted to know the truth.

　　A．hardly

　　B．successfully

　　C．merely

　　D．awfully

　　解析　句意：你不必生气，他仅仅想知道真相。故选C。

　　答案　C

　　5．________， the more it makes them cry.

　　A．The more they like the book

　　B．More they like the book

　　C．They like the book more

　　D．They like more the book

　　解析　考查“the ＋比较级，the ＋ 比较级”句型。句意：他们越喜欢这本书，它就让他们越想哭。

　　答案　A

　　6．—Good morning，sir. Can I help you?

　　—I' d like a barbecue together with a cup of orange juice. How much do you________？

　　A．pay

　　B．offer

　　C．charge

　　D．owe

　　解析　考查动词辨析。pay“付钱”；offer“提供”；charge“要价；控告；充电”；owe“欠(债)”。根据句意可知C项正确。

　　答案　C

　　7．—Haven't you heard the news?

　　—What news?

　　—Some of the workers are________while others are________.

　　A．on the march;

　　on strike

　　B．on march; on strike

　　C．on the march; on the strike

　　D．on the strike; on march

　　解析　考查短语搭配。句意：——你听到这个消息了吗？——什么消息？——一些工人在游行，另一些工人在罢工。on march游行；on strike罢工。选B。

　　答案　B

　　8．—Why are you going to________from that company.Don't forget it's a high­paid job?

　　—Because I don't like the way they________me.

　　A．leave；think

　　B．retire；regard

　　C．resign；treat

　　D．design；behave

　　解析　resign 辞职； treat 对待； retire 退休。

　　答案　C

　　9. In Scotland, as in the rest of the United Kingdom，________schooling begins at age 5 and ends at age 16.

　　A．compelling

　　B．forced

　　C．obliged

　　D．compulsory

　　解析　句意：苏格兰跟英国其他地方一样，义务教育从5岁开始，16岁结束。compelling，forced和obliged均含有“强制”之意，因此不符合题意；compulsory意为“必修的，规定的，强迫的”，强调根据法律或命令必须执行的事。

　　答案　D

　　10．Fitness is important in sport, but of at least________importance are skills.

　　A．fair

　　B．reasonable

　　C．equal

　　D．proper

　　解析　考查形容词词语辨析。句意：虽然健康的体格是从事体育运动的重要条件，而掌握技能至少也是同等重要的。fair 公正的；reasonable 合理的；equal 平等的，同样的；proper 合适的，适当的。注意此句中but后面的分句为倒装句，of importance等于important作表语，作者实际上是拿skills和fitness作对照，强调二者同等重要。根据语境判断，此处用equal最为合适。

　　答案　C

　　11. They failed to pass the exam last time; I regretted________.

　　A．to be not able to help

　　B．being unable to help

　　C．being not able to helping

　　D．not be able to help

　　解析　句意：上次他们没有通过考试， 我后悔没能帮他们一把。考查动词regret的用法。regret＋to do sth对尚未做的或正在做的事表示遗憾。

　　答案　B

　　12. The truck driver was fined for exceeding the speed________.

　　A．range

　　B．limit

　　C．rule

　　D．regulation

　　解析　句意：卡车司机因超速而被罚款。limit意为“限制； 界限”； range意为“(知识、知觉、听觉等的)范围”； regulation意为“规定， 规则”； rule和regulation是近义词， 意为“规定， 规章”。

　　答案　B

　　13．Many pure metals have little use because they are too soft, rust too easily, or have some other________.

　　A．drawbacks

　　B．strength

　　C．advantages

　　D．errors

　　解析　句意：许多纯金属几乎没用，因为它们太软，容易生锈，或者有一些其他的缺点。drawback缺点，不利条件；strength力气，强度，力量，长处；advantage优势，有利条件；errors错误，过失，误差，谬误。

　　答案　A

　　14．________that the demand for power continues to rise at

　　the current rate, it will

　　not

　　be

　　long

　　before

　　traditional sources become lack.

　　A．Concerning

　　B．Assuming

　　C．Regarding

　　D．Certaining

　　解析　考查固定用法。句意：如果能源需求以目前的速度继续增长，传统能源不久就会匮乏。assuming (that)．..假定……，为固定用法。故选B。

　　答案　B

　　15. I'm sorry to have________you with so many questions on such an occasion.

　　A．affected

　　B．impressed

　　C．bothered

　　D．taken

　　解析　句意：我对在这样一个场合就那么多问题打扰你感到十分抱歉。故选C。

　　答案　C

　　Ⅳ.阅读理解

　　A

　　Research advances over the past decade have told us that, with a little work, we humans can clone just about anything we want, from frogs to monkeys and probably even ourselves！So, we can clone things, but why would we want to？Let's look at some of the reasons people give to justify cloning.

　　1．Cloning for medical purposes

　　Of all the reasons, cloning for medical purposes most probably benefit large numbers of people. Cloning technologies might reduce the time needed to make a transgenic animal model, and the result would be a population of genetically identical animals for study.

　　2．Cloning stem cells (干细胞) for research

　　Stem cells are the body's bulding blocks which might be used to repair damaged or diseased organs and tissues. Researchers are currently looking toward cloning as a way to create genetically defined human stem cells for research and medical purposes.

　　3．Reviving endangered or extinct species

　　Dinosaur was an extinct species. Could we really clone dinosaurs? In theory? Yes. What would you need to do this? A well­preserved source of DNA from the extinct dinosaur, and a closely related species, currently living, that could serve as a surrogate(代用的 ) mother. In

　　reality? Probably not. It's not likely that dinosaur DNA could survive undamaged for such a long time. However, scientists have tried to clone species that became extinct more recently, using DNA from well­preserved tissue samples.

　　4．Cloning humans

　　Why would anyone want to clone humans？Some reasons are to help infertile_couples have children or to replace a decreased child.However, there are the risks involved.For example，how sure can we be that a cloned baby will be healthy or what might go wrong?

　　【语篇解读】 为什么要研究克隆技术？它对人类有利的方面是什么？

　　1．What's the main idea of the whole passage?

　　A．Why people use cloning.

　　B．How to clone animals.

　　C．Cloning is of great use for people and animals.

　　D．The development of cloning.

　　解析　主旨大意题。由第一段可知。

　　答案　A

　　2．Which of the following is TRUE according to the passage?

　　A．Cloning is mainly used for cloning human beings.

　　B．In the far future, we will have the live dinosaurs on earth.

　　C．Cloning human beings may cause a lot of trouble.

　　D．Genetically human stem cells are used for cloning human beings.

　　解析　细节理解题。由最后一段最后两句可知。

　　答案　C

　　3．The underlined phrase “infertile couples” in the last paragraph probably means________.

　　A．couples who just married

　　B．couples who are unable to bear children

　　C．couples who don't like bearing children

　　D．couples who want to bear more children

　　解析　推理判断题。没有生育能力的父母会想到用克隆的方法拥有自己的孩子。

　　答案　B

　　4．According to the passage，the reason why people want to clone humans is that________.

　　A．it can make people live longer

　　B．it can help infertile couples have children

　　C．it can replace a deceased child for the couple

　　D．B and C

　　解析　细节理解题。由最后一段第二句可知。

　　答案　D

　　B

　　The Human Genome(基因组) Project, a great $3 billion, 15－year task aimed at drawing the genetic(遗传的) map of humans, is now more than 90 percent completed. The scientific and medical communities(团体) are very excited about the chances genetic research provides for getting rid of diseases and prolonging(延长) human life. But those communities and policy(政策) makers also are careful about the scientific door they are opening as the project uncovers the mysteries of life.

　　For the last few years, the genetic advances in the developing field of biotechnology(生物技术) have provides material for all kinds of work, but the developments of modern science in unlocking the secrets of the human genetic code(密码) have opened a world of possibilities for human health, as well as for the popular imagination.

　　While European and Japanese researchers are making rapid progress in decoding(解码) human DNA, the leading organization for genetic research is in the United States, which began in 1990, is “unlocking the code” of the human body to learn how to defeat fatal(致命的)diseases.

　　Already, the Human Genome Project has become widely known and praised for finding the genes(基因) connected with terrible diseases as yet(迄今), and making progress toward separating the genes that show a sign of breast cancer or AIDS.

　　Once these genes are found and studied, researchers can develop new ways to attack infections(传染), and genetic diseases. Medical companies are very interested in mapping the human genome, as they expect to develop a lot of new drugs for these illnesses.

　　【语篇解读】 绘制人类基因组图，这将意味着人类消灭癌症、艾滋病的危害，延长人类寿命将成为现实。

　　5．Why did the scientists work hard at mapping the human genome?

　　A．Because the human genome can destroy many illnesses.

　　B．Because the human genome's completion can help them get rid of many diseases.

　　C．Because they wanted to be better known than others.

　　D．Because the human genome can provide a lot of chances of work.

　　解析　语义理解题。从文章最后一段第一句话Once these genes are found and studied, researchers can develop new ways to attack infections(传染), and genetic diseases 可以看出科学家们完成人类基因组图的目的。

　　答案　B

　　6．Which country studied the genes most rapidly in the world?

　　A．Japan.

　　B．Germany.

　　C．The United States.

　　D．China.

　　解析　细节理解题。因为．..the leading organization for genetic research is in the United States，所以选C。

　　答案　C

　　7．Which of the following is NOT true?

　　A．If the genes can be found, scientists can study many new ways to cure illnesses.

　　B．The scientists have made great progress in connecting the genes with the cancers.

　　C．Many medical companies show great interest in drawing the human genome map.

　　D．The United States began the Genes Study early in the 19th century.

　　解析　推理判断题。美国是在 1990 年，即 20 世纪末开始绘制人类基因组图的，所以选D。

　　答案　D

　　8．The author suggests that the Human Genome Project can cause________.

　　A．the policy makers to feel very worried and careful

　　B．the scientists to work harder

　　C．many people to find work easily

　　D．a lot of companies to produce many new drugs

　　解析　推理判断题。从文章内容可知，人类基因组图的完成将有助于科学家们攻克一系列难关。所以，他们在更努力地探究。

　　答案　B

　　be bound to；in good condition；pass on...to...；in vain；from time to time；strike ...into ones heart；bring back to life；lead to；look back on；end in