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    【题目】It was probably at that moment _____ I understood what kindness really was.

    A. that

    B. when

    C. which

    D. what

    【答案】A

    【解析】考查强调句。题目中含有It was，出现这样的结构，首先要考虑它是不是强调句。如果把这种句型结构划掉后，应该是一个完整的句子；去掉it was和空格处，剩下的句子经过调整语序后变成I understood what kindness really was probably at that moment是一个完整的句子，所以是强调句型，对时间状语进行强调。强调句的结构It is/was+被强调部分 + that + 句子的其他成分，所以选A。

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