题目内容

I think we should discourage people____ using their private cars.

A. at
B. from
C. to
D. for

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热拌沥青混合料施工，纵向接缝有（）和（）两种

They are so bad ____ the environment.

A. at
B. in
C. for
D. about

pollute 的名词是____?

A. polluty
B. pollutely
C. pollutement
D. pollution

热拌沥青混合料施工，纵向接缝碾压时采用（）以消除痕迹。