◎ 题干
The teacher gave us so difficult a problem _____ we couldn't solve.
The teacher gave us so difficult a problem _____ we couldn't solve it.

[     ]

A. as, that 
B. that, as
C. which, that
D. the ones, which 
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The teacher gave us so difficult a problem_____ we couldn't solve.The teacher gave us so difficult a problem_____ we couldn't solve it. [ ]A. as, thatB. th…”主要考查了你对  【关系代词】【从属连词】【状语从句】【限制性定语从句】  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。