◎ 题干
Let me think ____ it. The question is kind of difficult.
[     ]
A. over        
B. out        
C. on    
D. of
◎ 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“Let me think ____ it. The question is kind of difficult.[ ]A. over B. out C. on D. of…”主要考查了你对  【介词】  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。