导学案4 Vocabulary and Reading 64-66

目标

To learn something about Cloning and DNA

To summarize the main idea of the passage.

To use the language points correctly.

Task1: phrases: 从课文中找到相应的单词或短语

1. It's certainly true that...

2. the structure of the acid DNA酸性DNA结构

3. A transparent twisting ladder透明的双螺旋结构

4. The fundamental components of life生命的基本元素

5. The results of growing pea plants种植豌豆的结果

6. The genetic make-up of the new plant子代（下一代）的基因结构

7. a procedure to use enzymes用酶的程序

8. Unzip the DNA 解开DNA

9. cut out a sequence of genes截取一系列的基因片段

10. insert them into the host cell把它们植入主细胞

11. combine...with... be combined with

12. be identical to 和...一样，与...一致

13. It's certain that ...

14. valid reasons

15. offer cloning as an optional treatment for couples...

为夫妇提供作为选择性治疗的（克隆）

16. find it difficult to do sth.

17. under unknown psychological pressure在未知的心理压力下

18. reproduce the talents of exceptional human beings 复制非凡的天才

19. obtain a supply of stem cells获取大量的干细胞

20. recover from a disease从疾病中恢复

21. repair human tissue修复人体组织

22. what is clear is that...

23. some voluntary code 一些不成文的法规

24. compulsory government regulations强制性的政府条例

25. be handy to clone 克隆很方便

27. rely on 依靠，依赖

28. restrict the biodiversity of the breed 限制了生物品种的多样性。