题目内容

__________ she couldn’t understand was_________more and more students showed little interest in their lessons.
A．What; whyB．That; whatC．What; because D．Why; that
A
考查名词性从句。What引导起主语从句what she couldn’t understand，在句中understand的宾语。Why more and more students showed little interest in their lessons是 一个表语从句。因为句子很完整，所以使用连接副词why引导。句意：她不能理解的是为什么越来越多的学生对他们的课程没有兴趣。
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