1. www.yingc.net 英才网 Cloning

2. www.yingc.net 英才网 What animals have been cloned ? Dolly First cloned mule Cloned monkeys

3. www.yingc.net 英才网 First cloned horse First cloned cat

4. www.yingc.net 英才网 1.What is cloning ? 2.How can we clone something? Free talk

6. Read these words and decide which ones you are likely to see in the passage. acid bacteria embryos enzyme experience gene human tissue organism plant psychological stem cell structure upbringing Before Reading （ possibly ）

7. www.yingc.net 英才网 1. DNA ? 2. Enzyme ? 3. A clone ？ Fast-reading

8. DNA the fundamental component of life

9. www.yingc.net 英才网 enzyme chemicals formed in the body

10. www.yingc.net 英才网 a clone an organism which is genetically identical to another Dolly 5

11. www.yingc.net 英才网 How many possible reasons for cloning are mentioned in the passage ? Fast-reading Four

12. www.yingc.net 英才网 Careful-reading 1. who discovered the structure of DNA? When ? 2. What did Mendel understand in 1866 ？ 1953 Watson and Crick He understood that both the parent plants had influenced the genetic make-up of the new plant. Para 1

13. www.yingc.net 英才网 Careful-reading Find the expressions 1. 解码 DNA 2. 截取一段序列的基因 3. 把它们插入宿主细胞 Unzip the DNA Cut out a sequence of genes Insert them into the host cell How can we clone something ? Cloning takes the DNA from a single cell to create a whole individual. Para 2&3

14. www.yingc.net 英才网 Careful-reading Find the expressions 1. 正当的理由 2. 可供选择的治疗 方法 3. 未知的心理压力 4. 选择人生道路 5. 拥有新的缺点 6. 原有的美德 valid reasons an optional treatment unknown psychological pressure choose a path in life possess new vices existing virtues Para 4&5

15. Valid reasons (advantages) Disadvantages As an optional treatment for couples who find it difficult to have children A clone would be under unknown psychological pressure reproduce the talents of exceptional people A clone may possess new vices instead of existing virtues

16. www.yingc.net 英才网 Careful-reading Explain the expressions 1.recover from a disease 2. 修复人体组织 3. 一只优选奶牛 4.rely on 5. 限制生物品种的 多样性 6.at a crime scene repair human tissue a price cow 依靠，依赖 restrict the biodiversity of the breed 在犯罪现场 Para 6--8 从疾病中康复

17. www.yingc.net 英才网 Valid reasons (advantages) Disadvantages To obtain a supply of stem cells Embryos made from clones would be wasted which some people would find unacceptable. To help farmers grow resistant crops. To rely on a few cloned animals or crops would restrict biodiversity

18. www.yingc.net 英才网 Is it right to clone human beings ？ Discussion

19. www.yingc.net 英才网 Conclusion Science is a two-edge sword.

20. www.yingc.net 英才网 Role-play

21. www.yingc.net 英才网 homework Surf the Internet to find more information about cloning and write a composition : My View on Cloning

22. www.yingc.net 英才网 Tips You can write as follows: 1. Are you for or against cloning? 2. Give your reasons. Use these words: “firstly… secondly… lastly” 3. Give examples to support your idea. You can see the example.