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    High-speed trains travel at 300 kilometers an hour.which is about normal trains. A.four times the speed as B.the speed four times of C.four times as the speed of D.four times the speed of 答案 D 【查看更多】

     

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    High-speed trains travel at 300 kilometers an hour，which is about      normal trains．


    1. A.
      four times the speed as
    2. B.
      the speed four times of
    3. C.
      four times as the speed of
    4. D.
      four times the speed of

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    High-speed trains travel at 300 kilometers an hour，which is about      normal trains．

    A．four times the speed as B．the speed four times of
    C．four times as the speed of D．four times the speed of

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    High-speed trains travel at 300 kilometers an hour，which is about　 normal trains.

    A.four times the speed as　　　　　　　　　　 B.the speed four times of

    C.four times as the speed of 　　　　　　　　 D.four times the speed of

     

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