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    A NASA experimental jet, the X-43A, flew at a world-record speed---11,260 kilometres an hour on November 17. This speed is as that of sound. A. as ten times fast B. ten times so fast C. ten times as fast D. ten times faster 【查看更多】

     

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    A NASA experimental jet , the X-43A,flew at a world –record speed ---11,260 kilometres an hour on November 17.This speed is ______ as that of sound.


    1. A.
      astentimesfast
    2. B.
      tentimessofast
    3. C.
      tentimesasfast
    4. D.
      tentimesfaster

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    A NASA experimental jet, the X-43A, flew at a world-record speed---11,260 kilometres an hour on November 17. This speed is ____ as that of sound.

    A. as ten times fast       B. ten times so fast

    C. ten times as fast       D. ten times faster

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    A NASA experimental jet, the X – 43A, flew at a world – record speed – 11, 260 kilometers an hour. This speed is         as sound.

    A．as ten times fast          B．ten times so fast   C．ten times as fast      D．ten times faster

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    A NASA experimental jet, the X-43A, flew at a world-record speed－11 260 kilometers an hour on November 17．This speed is ________ as sound．

    [　　]
    A．

    as ten times fast

    B．

    ten times so fast

    C．

    ten times as fast

    D．

    ten times faster

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