1、Unit 2 Cloning Period 2 Learning about Language on strikeBon march; on strikeCon the march; on the strikeDon 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 B8Why are you going to_from that company.Dont forget its a highpaid job?Because I dont like th
2、e way they_me.Aleave；think Bretire；regardCresign；treat Ddesign；behave解析 resign 辞职； treat 对待； retire 退休。答案 C9. In Scotland, as in the rest of the United Kingdom，_schooling begins at age 5 and ends at age 16.Acompelling BforcedCobliged Dcompulsory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
3、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 D10Fitness is important in sport, but of at least_importance are skills.Afair BreasonableCequal Dproper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，o
4、f 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 C11. They failed to pass the exam last time; I regretted_.Ato be not able to helpBbeing unable to helpCbeing not able to helpingDnot 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。regretto do sth 对尚未做
5、的或正在做的事表示遗憾。答案 B12. The truck driver was fined for exceeding the speed_.Arange Blimit Crule Dregulation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 B13Many pure metals have little use because they are too soft, rust too eas
6、ily, or have some other_.Adrawbacks BstrengthCadvantages Derrors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 A14_that the demand for power continues to rise at the current rate, it will not be long before traditional sources bec
7、ome lack.AConcerning BAssumingCRegarding DCertaining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 B15. Im sorry to have_you with so many questions on such an occasion.Aaffected BimpressedCbothered Dtaken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.阅读理解AResearch advances over
8、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？Lets look at some of the reasons people give to justify cloning.1Cloning for medical purposesOf
9、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.2Cloning stem cells (干细胞) for research Ste
10、m cells are the bodys 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.3Reviving endangered or extinct speciesDinosaur was an
11、 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. Its not likely that din
12、osaur 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.4Cloning humansWhy would anyone want to clone humans？Some reasons are to help infertile_couples have children or to r
13、eplace 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？1Whats the main idea of the whole passage?AWhy people use cloning.BHow to clone animals.CCloning is of great use for
14、people and animals.DThe development of cloning.解析 主旨大意题。由第一段可知。答案 A2Which of the following is TRUE according to the passage?ACloning is mainly used for cloning human beings.BIn the far future, we will have the live dinosaurs on earth.CCloning human beings may cause a lot of trouble.DGenetically huma
15、n 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 C3The underlined phrase “infertile couples” in the last paragraph probably means_.Acouples who just marriedBcouples who are unable to bear childrenCcouples who dont like bearing childrenDcouples who want to bear more children解析 推
16、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 B4According to the passage，the reason why people want to clone humans is that_.Ait can make people live longerBit can help infertile couples have childrenCit can replace a deceased child for the coupleDB and C解析 细节理解题。由最后一段第二句可知。答案 DBThe Human Genome(基因组) Project, a
17、 great $3 billion, 15year 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 communit
18、ies 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
19、 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
20、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 sepa
21、rating 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 the
22、se 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。5Why did the scientists work hard at mapping the human genome?ABecause the human genome can destroy many illnesses.BBecause the human genomes completion can help them get rid of many diseases.CBecause they wanted to be better known than oth
23、ers.DBecause 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 B6Which country studied the genes most rapidly in the world?AJapan. B
24、Germany.CThe United States. DChina.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 C7Which of the following is NOT true?AIf the genes can be found, scientists can study many new ways to cure illnesses.BThe scientists have made great progress in connecting t
25、he genes with the cancers.CMany medical companies show great interest in drawing the human genome map.DThe 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 D8The author suggests that the Human Genome Project can cause_.Athe policy makers to feel very worried and carefulBthe scientists to work harderCmany people to find work easilyDa 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
