1. Unit 2 Cloning: Where Is It Leading Us?

2. What is the writing style? A. Expositive( 说明文 ) B. Descriptive （记叙文） C. Argumentative （议论文）

3. Read the passage quickly to find the main idea of each paragraph.

4. Skimming ___. Cloning has two major uses and successful clone. ___. (definition) Cloning is a way of making an exact copy of another animal and plant ___. The effect of Dolly. ___.It is forbidden to clone human beings. ___.The problems of Dolly. 1 2 3 4 5

5. Definition 2 major uses of cloning Cloning procedure The first successful animal clone It is a way of __________________ of another animal and plant. quantities of plants. 1)to produce ___________quantities of plants. 2)It is valuable for research on new ______________and medical research on ________. Cloning plants ______________while cloning of animals is ___________ The cloning of_______________, a _____________ in cloning tech. making an exact copy commercial straightforward breakthrough plants species animals Dolly the sheep complicated

6. The problems of Dolly the sheep The effect of Dolly the sheep Encouraging news : It seemed to develop ________ and produced ______in a _______way. Disturbing news: It lived for ____ years, half the length of the life of the _______ sheep. Its appearance raised a storm of ________and had a great impact on the _____ and public___________. It opened everybody’s eyes to the possibility of using cloning to cure _______________and even produce _____________. objections human beings normally natural 6 original imagination serious illnesses media a lamb

7. Argument s on cloning Evil leaders hope to clone ___________. Religious leaders raised ________ questions. Many governments _______ research into human cloning. Some countries continued to ___________evidence of the abundant medical aid. moral forbade themselves accumulate

8. Scanning to get detail information

9. 1. Dolly the sheep_____. A.looked exactly like the sheep that provides the egg cell B.was the exact copy of the sheep that provides the nucleus C. looked like the sheep that gave birth to it D. had the characteristics of all three sheep scanning

10. 2. 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

11. 3. It can be inferred from the passage that a cloned animal_____. A. usually lives as long as the original one B. usually lives longer than the original one C. usually dies earlier than the original one D. is usually as healthy as the original one

12. 4. Which of the following is not an advantage of cloning? A.Cloning can be used for medical purposes. B.Large quantities of food can be produced by cloning. C.Cloning can help keep animals from becoming extinct. D.Famous persons who have passed away can be cloned.

13. 5. The lamb is the clone of the cell from sheep because_____. A. it provides the egg cell B. it gives birth to the lamb C. it provides the nucleus D. it is a female sheep

14. 意大利狂人医生 : 安蒂诺里 冒死也要克隆人的 科学家 : 布瓦瑟利耶

15. We can conclude _______ A. Cloning is good for us. B. Cloning has two aspects. C. If cloning is used in a correct way it can bring many convenience to us. D. If cloning is used in an evil way it can cause much trouble. We should use cloning in a wise way !

16. As a coin has two sides, everything has two aspects. On one hand, if cloning is used in a correct way it can bring many convenience to us. On the other hand, if cloning is used in an evil way it can cause much trouble. Therefore, we should use cloning in a correct way.

18. exact twin commercial straightforward undertake breakthrough procedure carrier adj. 精确的；准确的 n. 双胞胎之一 adj. 成对的； 成双的 adj. 商业的；贸易的 adj. 简单的；坦率的 vt. 着手；从事；承担 n. 突破 n. 程序；步骤；手续 n. 携带者；搬运工； 运输工具 Words preview

19. cast altogether arbitrary correction object objection medium the media obtain vt. 扔；投；掷 adv. 总共；完全地 adj. 任意的 n. 改正；纠正； 修正 vi. 反对；不赞成 n. 不赞成；反对；异议 n. 媒介；手段；工具 大众传播媒体 vt. 获得；赢得 Words preview

20. attain moral conservative forbid accumulate vt. 获得；到达 adj. 道德 ( 上 ) 的；伦理的 adj. 保守的；守旧的 vt. 禁止；不准 vt. 积累；聚积 Words preview

21. pay off cast down object to in favour of 得到好结果；取得成功； 偿清 沮丧；不愉快 反对 赞成；支持 Expressions preview