◎ 题干
Frank insisted that he was not asleep ________ I had great difficulty in waking him up.
[     ]
A.whether  
B.although
C.for  
D.so
◎ 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“Frank insisted that he was not asleep ________ I had great difficulty in waking him up.[ ]A.whetherB.althoughC.forD.so…”主要考查了你对  【从属连词】  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。