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    3．_______ this sentence a second time，the meaning will become clear to you．（　　）
    A．If readingB．When you readC．ReadingD．Read

    分析 当你把这个句子再读一遍，意思会很清晰．

    解答 答案：B．根据句意：当你把这个句子再读一遍，意思会很清晰．再通过分析句子结构，其中含有一个时间状语从句，表示"当…时候"，A选项缺主语，C选项和D选项和句子主语不存在逻辑上的关系，故排除，故选B．

    点评 本题考查时间状语从句的连接词，在充分分析句型再结合语义的基础上便能选出正确答案，同时要注意其他选项的排除．

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