科学家成功地把人的抗病毒干扰素基因连接到烟草细胞的DNA分子上

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问题选择题

科学家成功地把人的抗病毒干扰素基因连接到烟草细胞的DNA分子上，使烟草获得了抗病毒能力。这项技术称为[ ]

A．克隆技术

B．发酵技术

C．组织培养

D．转基因技术

答案

答案：D

听力题

第Ⅱ卷(非选择题，共46分)

III.单词拼写（10分）

1. How much do you _________(要价) for mending shoes? 1.__________

2. If she _______(继续) drinking like that, I’ll have to carry her home. 2. __________

3. The car couldn’t start because the _______（发动机）went wrong. 3.___________

4. It is _________(极其) cold in the South Pole. 4. __________

5. The teacher walked the children out of the ________(幼儿园). 5. __________

6. I have _________(后悔) not having studied hard. 6.___________

7. The newspaper described her as a ______(有前途的) young pianist. 7. __________

8. The girl was so angry that she __________(撕) the letter into pieces. 8. __________

9. He started his first _______（航海）with only one ship and ten men. 9. ___________

10. I felt a _________(急剧的) pain in my stomach. 10. _________

选择题

我国政府规定，对适龄儿童进行计划免疫．其目的是（　　）

A．控制传染源

B．切断传播途径

C．保护易感人群

D．以上都对