◎ 题干
To understand the grammar of the sentence, you must break it ____ into parts.      
[     ]
A. down        
B. up                
C. off            
D. out
◎ 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“To understand the grammar of the sentence, you must break it ____ into parts. [ ]A. downB. up C. off D. out…”主要考查了你对  【介词和介词短语】  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。