练习册

  • 练习册
  • 试题
    The machine satisfactory after being tested. A. has proved B. has been proved C. has been proven D. is proved 【查看更多】

     

    题目列表(包括答案和解析)

    The machine ________ satisfactory after being tested.

    [　　]

    A．has proved
    B．has been proved
    C．has been proven
    D．is proved

    查看答案和解析>>

    The machine ________ satisfactory after being tested.

    [　　]

    A．has proved
    B．has been proved
    C．has been proven
    D．is proved

    查看答案和解析>>


    同步练习册答案