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    –Do you know what speed for a rocket to escape from the pull or gravity of the earth to send a satellite into outer space? ---No idea at all. I have never got the of it. A. it needs; idea B. is taken; hang C. is needed; hang D. it takes; thought 【查看更多】

     

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    -Do you know what speed _______ for a rocket to escape from the pull or gravity of the earth to
    send a satellite into outer space?   
    -No idea at all. I have never got the ______ of it.     
    [     ]

    A. it needs; idea  
    B. is taken; hang  
    C. is needed; hang  
    D. it takes; thought

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    –Do you know what speed _______ for a rocket to escape from the pull or gravity of the earth to send a satellite into outer space?

    　 ---No idea at all. I have never got the ______ of it.

    　 A. it needs; idea 　　B. is taken; hang 　　C. is needed; hang 　 D. it takes; thought

     

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