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    31．The overseas Chinese scientist made another wonderful discovery, of great value to study AIDS. A．which I think it is B．which I think is C．I think it is D．I think is 【查看更多】

     

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    The overseas Chinese scientist made another wonderful discovery, ______ of great value to study AIDS.


    1. A.
      which I think it is
    2. B.
      which I think is
    3. C.
      I think it is
    4. D.
      I think is

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    The overseas Chinese scientist made another wonderful discovery, ___________ of great value to study AIDS.

     A．which I think it is        B．which I think is    C．I think it is          D．I think is

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