睡眠紊乱

　　我们的身体夜晚需要休息，白天需要清醒。大多数人每晚需要8到8.5个小时的睡眠才能正常运转。找到更多的时间、更好的睡眠方法可能是个挑战。科学家已经确认了80多种不同的睡眠紊乱症(sleep disorders)。有些睡眠紊乱症是遗传的。但是，许多睡眠紊乱症是由于熬夜，经常跨时区旅行以及上夜班而引起的。

　　参考译文：

　　Sleep Disorders

　　Our bodies want to sleep at night and be awake during the day. Most women and men need between eight and eight and a half hours of sleep a night to function properly throughout their lives.Finding ways to get more and better sleep can be a challenge. Scientists have identified more than 80 different sleep disorders. Some sleeping disorders are genetic. But many problems are caused by staying up late and by traveling frequently between time zone or by working nights.

扫描/长按二维码可帮助学习46级考试

了解四六级考试动态

了解四六级历年真题

了解四六级考试技巧

了解作文听力等资料

万题库下载 | 微信搜索"万题库英语四六级考试"

　　相关推荐：

　　英语四六级考试时间 | 英语四级作文 | 六级作文

　　历年大学英语四级考试真题听力(含MP3)汇总

　　历年大学英语四级真题及答案|解析|估分|下载

　　历年大学英语六级真题及答案|解析|估分|下载

　　历年大学英语六级考试听力下载(原文+MP3)汇总

　　大学英语四级考试真题 | 英语六级考试真题答案