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    12．I've always been very ______ about giving my address and QQ number to strangers．（　　）
    A．curiousB．concernedC．cautiousD．confused

    分析 在把地址和QQ号码给陌生人的时候我总是很小心．

    解答 答案是C．
    本题考查形容词词义辨析．curious好奇的；concerned关心的，担心的；cautious小心谨慎的；confused感到困惑的；根据常识，对陌生人要"谨慎"，所以答案选择C．

    点评 辨析形容词要在识记常见形容词及其搭配的基础上理解语境，根据具体语境推断合理的答案．

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