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题目内容
（兰州大学大学英语4）
(4分)Lots of people pretend that they never read advertisements, but this claim ________.
A. may be hardly doubted
B. may be seriously doubted
C. may be hard doubting
D. may be doubted serious
A. may be hardly doubted
B. may be seriously doubted
C. may be hard doubting
D. may be doubted serious
参考答案
