编绘1：5万地形图水系要素时，当底图上河流宽度大于（）mm时，河

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问题单项选择题

编绘1：5万地形图水系要素时，当底图上河流宽度大于（）mm时，河流应用双线依比例尺表示。

A、0.3

B、0.4

C、0.5

D、0.6

答案

参考答案：B

填空题

用所给词的适当形式填空。

1. The number of students _________ (be) 3,000 in my school.

2. There are 200 _________ (hundred) cars in the town.

3. There are_________ (hundred) of cars in the town.

4. That must be a lot more fun than _________ (take)a bus.

5. In China, not all students _________ (take) the car to school.

6. He comes from _________ (America). He is _________ _________ (America) man.

He speaks _________ (England).

7. Thank you for _________ (help) me.

Thanks for your_________ (help).

填空题

蓄电池组过放电易导致（）。