问题
选择题
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
答案：B
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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：B