2021年英语专四听力练习材料042

2021-06-09 17:12:00来源:网络

  新东方在线专四专八频道给大家整理的2021年英语专四听力练习材料042,希望能够对大家的专四专八考试备考有所帮助,更多有关专四专八的备考内容,欢迎随时关注新东方在线专四专八频道。

  Passage 42

  Sleep

  Why is it so difficult to fall asleep when you are overtired? There is no one answer that applied to every individual. It is possible to feel “tired” physically and still be unable to fall asleep, because while your body may be exhausted, you do not feel sleepy. It is not so easy to simply “turn off”.

  Lack of sleep complicates matters even more. Experts say adults need at least seven to eight hours of sleep a night to function properly. When you get less sleep than that on consecutive three nights, you begin to accrue for “sleep debt”. As sleep debt increases your body experiences a stress response. Now a vicious cycle has been created: You experience the feeling of being more and more tired, but your body is increasingly stimulated. “Power sleeping” for more hours on weekends is only a temporary solution. There is no substitute for getting a good night’s sleep on a regular basis. (158 words)

  以上就是新东方在线专四专八频道给大家整理的2021年英语专四听力练习材料042,希望对大家有所帮助,更多备考内容,欢迎随时关注新东方在线专四专八频道。


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