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    We want to know whether the drug has an effect people's health. A.on B.to C.with D.in 【查看更多】

     

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     We want to know whether the drug has an effect _______________ people's health.

    A. on                             B. to  ?                    C. with                          D. in

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    We want to know whether the drug has an effect ______ people's health.

    A.on　　　　　　 B.to ?　　　 C.with　　 　　 D.in

     

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    We want to know whether the drug has an effect _______________ people's health.

    A．on

    B．to ?

    C．with

    D．in

     

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