练习册

  • 练习册
  • 试题
    7．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 【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.


    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

    查看答案和解析>>

    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

    查看答案和解析>>

    . 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

    查看答案和解析>>

    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 mot polluted

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

     

     

    查看答案和解析>>

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

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

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

    查看答案和解析>>


    同步练习册答案