7.New technology to make sure that the cars, taxis, buse闂傚倸鍊烽懗鍫曞磻閵娾晛纾垮┑鐘崇閸ゅ牏鎲搁悧鍫濈瑨闁绘帒鐏氶妵鍕箳閹搭垱鏁鹃柣搴㈢啲閹凤拷查看更多

 

题目列表(包括答案和解析)

New technology ______ to make sure that the cars, taxis, buses and trains we use ______ the air.

A. is used; not to pollute       B. has used; is not polluted

C. is being used; do not pollute     D. has been used; to pollute

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. New technology ______ to make sure that the cars, taxis, buses and trains we use ______ the air.

A. is used; not to pollute       B. has used; is not polluted

C. is being used; do not pollute     D. has been used; to pollute

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New technology ____ to make sure that the cars, taxis, buses and trains we use _____ the air.

A.is used; not pollute                                      B.has used; is not polluted

C.is being used; do not pollute                         D.has been used; to pollute

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