题目内容

比例尺越大，等高距就越小；比例尺越小，等高距就越大。

A. 对
B. 错

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按四分之一基本等高距描绘等高线，称为助曲线

A. 对
B. 错

The manager requests that the material( )by fax immediately.

A. be sent
B. sends
C. is sent
D. sent

I would rather you( )on Monday.

A. had gone
B. go
C. will go
D. went

It’s high time we( )our morning exercises.

A. begin
B. began
C. will begin
D. begun