◎ 题干
When you have any questions hard to answer, you may ________ your notes.
[     ]
A. turn on
B. come to
C. refer to
D. look up
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“When you have any questions hard to answer, you may ________ your notes.[ ]A. turn onB. come toC. refer toD. look up…”主要考查了你对  【动词短语】  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。