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     Leaves are found on all kinds of trees, but they differ greatly         size and shape.

    A. on    B. from    C. by    D. in

     

    【答案】

     D  

    介词in表示“在......方面。句意：“人们发现树上长着各种各样的叶子，但它们的大小、形状大不相同。differ from与…..不同，与本题题意符合。

     

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