You'd better not leave the room with the

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问题选择题

You'd better not leave the room with the radio ________.

[ ]

A. in

B. at

C. on

答案

答案：C

选择题

—We experienced a freezing cold winter this year.

—Oh, yes. I think ______ is the power of global warming that the climate goes from one extreme to

the other. [ ]

A. such

B. this

C. so

D. it

问答题简答题

蜗杆通常与轴做成一个整体，按蜗杆螺旋部分的加工方法如何分类？