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    there is life on another planet is almost impossible. that 【查看更多】

     

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    ________ there is life on another planet is almost impossible.

    A. How

    B. That

    C. Why

    D. Whether

     

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    ________ there is life on another planet is almost impossible.

    A. How

    B. That

    C. Why

    D. Whether

     

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    ________ there is life on another planet is almost impossible.

    A.How　　　　　　　　 B.That　　　　　　　 C.Why　　　　　　　　 D.Whether

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    ________ there is life on another planet, most scientists believe, is almost impossible．

    [　　]
    A．

    Whether

    B．

    What

    C．

    That

    D．

    How

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