24、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

24、C

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科目：高中英語 來源： 題型：單選題

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


  1. A.
    is used; not to pollute
  2. B.
    has used; is not polluted
  3. C.
    is being used; do not pollute
  4. D.
    has been used; to pollute

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科目：高中英語 來源： 題型：

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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科目：高中英語 來源： 題型：

. 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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科目：高中英語 來源： 題型：

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 mot polluted

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

 

 

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科目：高中英語 來源： 題型：

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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