◎ 题干
The teacher asked such a difficult question _____ no one in the class could answer.

[     ]

A. that
B. what
C. which
D. as
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“The teacher asked such a difficult question _____ no one in the class could answer. [ ]A. that B. what C. which D. as …”主要考查了你对  【关系代词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。