Many people agree that knowledge of English is a must in international trade today.A. a; 不

发布时间：2020-08-16 19:17:53

Many people agree that     knowledge of English is a must in     
international trade today.
A. a; 不填
B. the; an
C. the; the
D. 不填; the

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(答案→)A. a; 不填
B. the; an
C. the; the
D. 不填; the
解析：本题考查冠词。a knowledge of指某一方面的知识；international trade国际贸易,不是特指 不用加定冠词。
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