新人教版高二英语下学期Unit2Cloning.docx

1、新人教版高二英语下学期Unit2CloningUnit 2 Cloning I. 单项填空从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。1. They have no idea at all _. A. where he has gone B. where did he go C. which place has he gone D. where has he gone 2. Your composition is _to your brothers. A. the same B. identical C. different D. equal 3. _news came _an

2、unknown disease was spreading in the area .A. Disturbing / that B. Disturbed / which C. Disturbing / which D. Disturbed / what 4. He was _down for several days after he heard the bad news .A. broken B. cast C. cut D. discouraged 5. _ what we have now, we cant afford so large a house. A. In B. At C.

3、With D. Near6. Opening the book, she found in it a white, plain envelope with her name _ on it. A. to print B. printed C. printing D. print7. Seeing your picture, I couldnt resist _ the days _ we spent together. A. to think of; when B. to think of; which C. thinking of; which D. thinking of; when8.

4、Are you suggesting that I _ too old for the job? A. am B. should be C. be D. was9. His hard work paid _ when he got the result. A. off B. over C. out D. back10. He is a cutler(刀具商)-_, a man who sells knives and sharp tools. A. in conclusion B. in general C. whats more D. that is to say 11. One of th

5、e men held the view _ the book said was right. A. what that B. what C. that D. that what12. We thought of asking him for help, but we were _ to get in touch with him at that time. A. happy B. anxious C. easy D. unable13. Hes _ to fail the exam if he doesnt do any revision. A. near B. fit C. bound D.

6、 easy14. Every possible means _to prevent the air pollution, but the sky is still not clear.A. are being used B. have been used C. has been used D. had been used 15. - Catherine, I have cleaned the room for you.- Thanks, you _it . I could manage it myself.A. neednt do B. neednt have done C. mustnt d

7、o D. shouldnt have done II. 单词拼写。1. The brothers d_ widely in their tastes. 2. The question is quite s_ , while that one is much more complicated.3. She r_ from the competition after pulling a leg muscle.4. Smoking is f_ in public places.5. His suggestion sounds quite r_ to most of us.6. The film wa

8、s a _ (商业的) success.7. Id like to come, too, if you have no _(反对).8. He _ (仅仅)asked us our names.9. There were strong _ (争论) for and against the plan.10. He always managed to _(得到)what he wanted.III. 完形填空 In the past, scientists have produced exact genetic copies of sheep and a few other animals. Th

9、ey 1 these clones from a single cell of an adult animal. Recently, a private group of scientists has announced 2 to make an exact copy of a human being. Doctor Zavos, an American member of the team, says he and 3 will soon begin to clone humans and they hope to produce the worlds forst cloned 4 with

10、in the next two years. Doctor Zavos says the new 5 group plans to offer human cloning to women unable to become 6 and produce children. The 7 would be similar to that used to clone animals. It would 8 clearing genetic material from a womans egg. Doctors then would 9 genetic material from the womans

11、husband into the egg 10 putting it in the womens uterus(子宫). Doctor Zavos says his 11 plans to do its work in a country near the Mediterranean Sea, but he did not 12 the country. He days an Italian reproductive expert, Severino Antinori, is 13 the team. Doctor Antinori has made 14 efforts to help ma

12、ny older women become pregnant. He is known for 15 pregnancies in women as old as sixty. Many medical experts and other groups 16 the idea of cloning humans. Several doctors criticized the 17 by Doctor Zavos. They say doctors do not know if cloning humans is 18 or safe. They say it would be irrespon

13、sible to 19 to clone a human being. That is because the 20 of success are too small and the risks are too great.1. A. bought B. created C. discovered D. found2. A. plans B. results C. successes D. agreements3. A. another B. othes C. the other D. the others4. A. plant B. animal C. bird D. baby5. A. i

14、nternational B. national C. American D. Italian6. A. successful B. born C. pregnant D. fertile7. A. imagination B. technology C. story D. symbol8. A. involve B. start C. make D. borrow9. A. translate B. place C. take D. make10. A. after B. while C. before D. on11. A. country B. group C. university D

15、. company12. A. call B. found C. name D. consider13. A. managing B. running C. controlling D. leading14. A. high B. total C. great D. wide15. A. successful B. beautiful C. thankful D. sorrowful16. A. take up B. object to C. put up D. bring down17. A. announcement B. program C. subject D. idea18. A.

16、careful B. interesting C. unable D. possible19. A. manage B. refuse C. attempt D. hope20. A. facts B. results C. sizes D. chancesIV. 语法填空仔细阅读下面的短文，短文中有10个空格，请按照短文意思填写相应的词，每空一词。Some years ago, SARS broke out in the mainland of China, causing some people to be killed or nearly got close to 1 . The sit

17、uation was so severe that there was no time to debate who is to blame. The most 2 (importance) thing for the government to do is to find out the cause of this 3 (dead) disease. They invited all the most famous experts in this field to discuss and quite a few suggestions were 4 (put) forward. Some of

18、 the top experts picked out those suggestions and tested them to see whether they were 5 (avail). Doctor Zhong chose one patient who was seriously ill and had little hope of picking 6 and had the new medicine 7 (test) on him. To his great joy, this patient recovered! He made his way 8 his office and

19、 telephoned to the top official, 9 (tell) him this exciting news. For convenience, he moved to live in his office. His method 10 make sense. Not soon after that, the other hospitals also controlled this terrible disease and kicked it out finally.1. 2. 3. 4. 5. 6. 7. 8. 9. _ 10. _V. 阅读理解A Have you se

20、en Jurassic Park? In this film, scientists use DNA kept for tens of millions of years to clone dinosaurs. They find trouble, however, when they realize that the cloned creatures are smarter and more dangerous than expected. Thats nothing more than a fiction. But could we really clone endangered anim

21、als? To date, the most successful attempt to do so was the cloning of a gaur, a rare ox-like animal from southeast Asia. Scientists used a cow to bring the cloned baby gaur, named Noah. Two days after birth, however, Noah died from a common bacterial infection. Other endangered species that may be c

22、loned include the African bongo antelope (邦戈羚羊), the Sumatran tiger, the cheetah (猎豹), and the giant panda. Next, could we really clone extinct animals? In theory? Yes. To do this, you need a well-kept source of DNA from the extinct animals such as wool mammoth (毛象), Tasmanian tiger, or even dinosau

23、r, and a closely related species, still living, which could serve as a surrogate mother. In reality? Probably not. On the one hand, its not likely that extinct animals DNA could survive undamaged for such a long time. Cloning extinct animals as wool mammoth, Tasmanian tiger, or dinosaur is much more

24、 difficult due to the lack of properly well-preserved DNA. On the other hand, for example, a gaur can have a cow as a surrogate mother, definitely not a monkey. But what about an extinct animals as unique as the panda? What species could possibly serve as a surrogate mother? Cloning presents many ex

25、citing possibilities. However, even if extinct animals are brought back, they could not survive in todays world. Not only do most extinct animals have no habitat to love in, but the other plants and animals they depended on for food may also be gone as well.1. It can be learned from the text that _.

26、A. scientists have cloned the African bongo antelopeB. both the cheetah and the giant panda live in AsiaC. the gaur lives in Asia and is endangeredD. the gaur is an extinct species2. The underlined words “a surrogate mother” probably refer to a female who _. A. contributes its eggs to another female

27、 B. gives birth to a baby for another female C. gives birth to a baby of its own D. cannot give birth to a baby3. The difficulty in cloning an extinct species is the lack of _. A. both the well-preserved DNA and plants to live on B. both the habitat to live in and the well-preserved DNA C. both habi

28、tat to live in and plants to live on D. both the well-preserved DNA and a surrogate mother4. In the authors opinion, it is possible that _. A. some extinct species may be cloned, but not survive B. extinct species may be cloned and easily survive C. a gaur can have a monkey as a surrogate mother D.

29、all the extinct species may be clonedBResearch 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?Of all the reasons, cloning for med

30、ical purposes most probably benefit large numbers of people. How might cloning be used in medicine? 1. Cloning animal models of diseaseMuch of what researchers learn about human disease comes from studying animal models such as mice. Often, animal models are genetically engineered to carry disease-c

31、ausing mutations (变异) in their genes. Creating these transgenic(转基因的) animals is a process that requires trial-and-erro and several generations of breeding (培育). 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 the treatment of diseasesStem cells are the bodys bulding blocks,