【題目】_____the teacher couldn’t understand was _____ fewer and fewer students showed interest in his class.

      A. What; that B. All that; because

      C. Why; that D. What; why

      【答案】A

      【解析】

      試題分析：考查名詞性從句； 根據(jù)句子結構可知，第一空為主語從句，從句中缺少understand的賓語，第二空為表語從句，從句中缺少原因狀語。句意為，她無法理解的是，為什么越來越少的學生對她的課感興趣 ，故選A項。

      考點 : 考查名詞性從句

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