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    ( )The population may be the greatest challenge of the world today. A.increase B.increased C.increasing D.increases 【查看更多】

     

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    The ________ population may be the greatest challenge of the world today.

    [　　]

    A．increased
    B．increasing
    C．increase
    D．increasingly

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    The ________ population may be the greatest challenge of the world today.

    [　　]

    A．increased
    B．increasing
    C．increase
    D．increasingly

    查看答案和解析>>


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