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    Finding information in today’s world is easy. The ______ is how you can tell if the information you get is useful or not.

    A. knowledge B. ability

    C. competition D. challenge

    D

    【解析】

    试题解析：考查词义辨析。A知识；B能力；C竞争；D挑战。推测句意：在当今的世界，发现信息是很容易的，挑战是你如何辨别你所得到的信息是有用或没用的。其他选项不符题意，故选D。

    考点：考查词义辨析。

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