◎ 题干
I failed in the final exam last term. Only then ____the importance of studies.

[     ]

A. I realized
B. I had realized
C. had I realized
D. did I realize
◎ 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“I failed in the final exam last term. Only then ____the importance of studies. [ ]A. I realized B. I had realized C. had I realized D. did I realize …”主要考查了你对  【部分倒装】  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。