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    Cloning plants is straightforward cloning animals is very complicated . A. so that B. although C. while D. as if 【查看更多】

     

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    Cloning plants is straightforward           cloning animals is very complicated .

    A. so that         B. although       C. while       D. as if

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    Cloning plants is straightforward           cloning animals is very complicated .

    A．so that

    B．although

    C．while

    D．as if

     

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