Unit 2 词汇练习--高二英语人教版选修八.docx

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1、选修8 Unit 2 词汇练习1. Cloning is a way of making an _ (精准的) copy of another animal or plant. 2. It also happens in animals when _ (双胞胎) identical in sex and appearance are produced from the same original egg. 3. Firstly, gardeners use it all the time to produce _ (商业的) quantities of plants. 4. Cloning p

2、lants is _ (简单直接的) while cloning animals is very complicated. 5. It is a difficult task to _ (着手，从事). 6. But at last the determination and patience of the scientists _ (取得成功) in 1996 with a _ (突破) - the cloning of Dolly the sheep. 7. The _ (程序) works like this: .8. Cloning scientists were _ (ph.失望沮丧

3、) to find that Dollys illnesses were more appropriate to a much older animal. 9. _ (总共，完全地) Dolly lived six and a half years, half the length of the life of the original sheep. 10. Sadly the same _ (任意的) fate affected other species, such as cloned mice. 11. Could it be solved if _ (改正修正) were made i

4、n their research procedure?12. On the other hand, Dollys appearance raised a storm of _ (反对) and _ (对有巨大影响) the _(媒体) and public imagination. 13. Although at present human egg cells and embryos needed for cloning research are difficult _ (获得), newspapers wrote of evil leaders hoping to clone themsel

5、ves to _ (实现他们的抱负). 14. Religious leaders also raised _ (道德的) questions. 15. Governments became nervous and more _ (保守的). 16. Some began to reform their legal systems and _ (禁止) research into human cloning, but other countries like China and the UK, continued to _ (积累) evidence of the abundant medic

6、al aid that cloning could provide. 17. Is it _(ph.支持) cloning or against it?18. According to the constitution (_) it is _(义务的，强制的) for citizens to undertake military service.19. The producer of the media program disagreed with Jennifer joining in the _ (合唱团).20. Before you can make a _ (一条面包), you n

7、eed to get some _ (面粉).21. You _ (欠) the lady an apology.22. Dollys death, like her birth, _ (ph.一定会) raise worries.23. Scientists believe human cloning is just a matter of time but the _ (假设) that human clones have already been born hasnt been proved yet.24. However, the problem that she later deve

8、loped a serous lung disease _ (烦心) scientists.25. Whoever break the traffic _(规则) will be punished.26. The popularity of films such as Jurassic park in which a scientist clones several kinds of extinct dinosaurs proves how the ideas _ (敲击) a mixture of fear and excitement into peoples hearts.27. The

9、 _ (最初的) requirement is that you need to perfect a DNA.28. All efforts of cloning and animal will be _ (ph.徒劳，白费) if there is not enough for diversity in the group to overcome illnesses.29. Others will survive and pass on the ability to _ (抵抗) that disease to the next generation。30. The great _ (缺点，

10、缺陷) to cloning a group of animals is that they would all have the same arrangement of genes and so may died of the same illness.31. So the chance of dinosaurs ever returning to the earth is _ (=simply) a dream.32. It has long but not sharp _ (爪子) which can not hurt children.33. It would make an ideal pet for a family and children will _ (喜爱) it.34. It produces large nutrients which easily _ (孵化) into young dodos.35. _ (羽毛) and leather can be used as _ (装饰).36. The dodo became extinct fairly recently so its DNA is still _ (ph. 状态良好)学科网（北京）股份有限公司