◎ 题干
Don't do any other things while you are doing your homework. So please _____ your MP4.
[     ]
A. turn up  
B. turn down    
C. turn off    
D. turn on
◎ 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“Don't do any other things while you are doing your homework. So please _____ your MP4.[ ]A. turn up B. turn downC. turn offD. turn on…”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。