2. 外语
  3. Mary tried _______ to persuade her husband to give up smoking.

Mary tried _______ to persuade her husband to give up smoking.

admin2011-02-04  58
问题 Mary tried _______ to persuade her husband to give up smoking.
选项 A、in line
B、in vain
C、at length
D、without fail
答案B
解析 介词短语辨析。A．in line排成一行，排队；B．in vain徒劳地，无益地；C．at length最后，终于； D．without fail必定，无疑。根据句意应选B。句意为：玛丽虽然极力劝说她的丈夫戒烟，但是徒劳无效。
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大学英语六级

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