下图是某国从18世纪80年代到20世纪70年代人口生产类型的四个阶段

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问题选择题

下图是某国从18世纪80年代到20世纪70年代人口生产类型的四个阶段示意图。按人口再生产类型的演变历程，排列正确的是

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A．②③④①

B．①③②④

C．①②③④

D．④①②③

答案

答案：B

填空题

根据句意和首字母提示填入合适的单词

1. This street is very n__ ,this car doesn't go across.

2. The teacher a him not to eat too much meat.

3. How can I c with you? Can l send an e-mail?

4. It's a w____idea,it can help us work out this problem.

5. Don't make noise in p .

6. We all lose ourselves in the beautiful s in Hangzhou.

7. It's late, so I have to have a q breakfast.

8. There is a b over the river.

9. Do you know the a of this kind of new tool?

10. My friend o a book about the history and custom to read.

填空题

LKJ-2000监控装置显示界面的主窗口区位于中间，设有（）的显示框，显示测距仪的各种状态信息。