高二英语人教版选修8学案新知预习Unit2Cloning

Unit 2　Cloning 新知预习 Ⅰ.词汇点兵 　　预习本单元词汇，完成下列测评项目。 1．The brothers 　 　　(与……不同) widely in their tastes. 2．This question is quite 　 　　(简单),while that one is much more complicated. 3．It is quite 　 　　(令人不安) to hear the bad news. 4．Smoking is 　 　　(禁止) in public places. 5．His suggestion sounds quite 　 　　(合情合理) to most of us. 6．The film was a 　 　　 (商业的)success. 7．I’d 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. 答案:1.differ　2.straightforward　3.disturbing　4.forbidden5.reasonable　6.commercial　7.objection　8.merely9.arguments　10. obtain Ⅱ.词组活用 cast down　pay off　in favour of　from time to timebe bound to  1. She was 　 　　by her husband’s death. 2. My uncle comes to have dinner with us 　 　　. 3. He has been working so hard at his lessons, so he 　 　　pass the exam this time. 4. Finally his efforts 　 　　. 5. All of them were strongly 　 　　 the project. 答案:1.cast down　2.from time to time　3.is bound to4.paid off　5.in favour of Ⅲ.语篇领悟 阅读课文，从每题所给的四个选项(A、B、C和D)中选出最佳选项。 Text A 主旨大意 1.The main idea of the text is 　 　　. A. animal cloning is very valuable and can benefit the world B. animal cloning could be misused by bad people so it must be forbidden C. animal cloning is well developed because Dolly the sheep was born D. animal cloning raised arguments and scientists are not sure about its future 答案:D 细枝末节 2. Which of the following statements about cloning is NOT true according to the text? A. Cloning is something that has been developed quite recently. B. Twins that look exactly the same are originally from the same egg. C. Cloning is used by gardeners to make more money. D. Animal cloning is much more difficult than plant cloning. 答案:A  3. The cloning of Dolly the sheep succeeded because 　 　　. A. it’s easier to clone a sheep than other animals B. the scientists were determined and worked hard with patience C. the scientists were rewarded and got lots of money D. many other attempts to clone mammals failed 答案:B  4. The lamb is the clone of the cell from sheep B because 　 　　. A .it provides the the egg cell B. it gives birth to the lamb C. it provides the nucleus D. it is a female sheep 答案:C  推理判断 5. The sheep that donated the somatic cell most probably lived 　 　　years. A.3　　　　B.6　　　　C.9　　　　D.12 答案:D Text B 主旨大意 6. The writer of the text 　 　　. A. is excited by the possibility of cloning fiece and extinct animals B. believes that extinct animals can be brought back to life by cloning C. thinks it impossible or unsuitable to clone extinct animals like dinosaurs D. dreams of dinosaurs returning to the earth 答案:C 细枝末节 7. The film Jurassic Park is popular because 　 　　. A. people are interested in the subject of cloning B. all the actors are dinosaurs C. it was directed by a scientist who clones dinosaurs D. it proves very interesting 答案:A  8. Which of the following is true? A. Mice were cloned in 1981. B. Dolly the sheep was the first cloned animal. C. The name of the cloned cow is “Bison”. D. China was successful in cloning mammals. 答案:D  9. The reasons why a group of cloned animals all die of the same illness do NOT include 　 　　. A. they have the same arrangement of genes B. there isn’t enough diversity in the group for it to overcome illnesses C. the illness is a new one D. their arrangement of genes can not resist that new disease 答案:C 推理判断 10. We can infer from the text that 　 　　. A. scientists are experimenting to clone dinosaurs B. dinosaurs will never return to the earth C. cloned animals will only live in the zoo D. the DNA of dinosaurs can only survive 10 000 years 答案:B