◎ 题干
The CD-Rom helps you learn English  _________ your knowledge of English grammar and vocabulary.
[     ]
A. to test    
B. by testing      
C. test          
D. with test
◎ 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“The CD-Rom helps you learn English_________ your knowledge of English grammar and vocabulary.[ ]A. to test B. by testing C. testD. with test…”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。