VOA常速英语2008年-US Study Shows Sleep Deprivation Affects Work,
时间：2008-03-14 02:57:27
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By Melinda Smith
Washington
06 March 2008
Have you ever wished you could put aside your work just for a short nap? If so, you may be sleep deprived. Sleep experts say sleep deprivation is a common problem among many people who put in long hours on the job or take work home with them. VOA's Melinda Smith has results of a recent poll conducted by the National Sleep Foundation.
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