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题型:单选题 题类:常考题 难易度:普通
宁夏石嘴山市2016-2017学年第三中学高一下册英语期中考试试卷
The World Health Organization gave a warning to the public without any ______when the virus of H1N1 hit Mexico in April, 2009.
— It wasn't me. I was doing homework all the morning.
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