__he couldn’t understand was...

________he couldn’t understand was________，as a teacher of Chinese，he was asked to teach history.

A．What；that	B．What；what
C．What；which	D．Why；how

A 【解析】这题考查名词性从句的用法，第一空是what引导主语从句，并在主语从句中做宾语，第二空是that引导表语从句从句中不缺成分。句意是：他不能理解的是，做为一个语文老师，他被要求教历史。选A。

考点分析：

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________he couldn’t understand was______...