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题目内容
（河南工业大学大学英语）
Having a good command of English is_____ an easy thing.(本题1.5分)
A、 by all means
B、 by any means
C、 by every means
D、 by no means
A、 by all means
B、 by any means
C、 by every means
D、 by no means
参考答案