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    How to feed a population is a problem that is many people. A. growing, troubling B. grown, troubled C. growing, troubled D. grown, troubling 【查看更多】

     

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    How to feed a ________ population is a problem that is _________ many people.

    A. growing, troubling　　　　　　

    B. grown, troubled

    C. growing, troubled　　　　　　　

    D. grown, troubling

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