Why did the man get to sleep so late?

Why did the man get to sleep so late?A.He is doing some medicine research. B.He

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点击开始播放听力音频mp3:{MP3:http://wximg.233.com/attached/media/20130

点击开始播放听力音频mp3:{MP3:http://wximg.233.com/attached/media/20130825/2013082515275481

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The phrase "first-come, first-served" tells you that __

The phrase "first-come, first-served" tells you that __A.people can buy the tick

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When the mixture is used, it is important to

When the mixture is used, it is important toA.keep sugar and salt in water B.dri

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In order t'o prepare herself for a. more satisfactory job, t

In order t'o prepare herself for a. more satisfactory job, the writerA.has taken

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