欢迎来到新航道官网!Welcome to New Channel School!
400-0311-689

首页>托福>托福写作>2014年新托福写作范文:Sleep

2014年新托福写作范文:Sleep

来源:新航道 浏览:0 发布日期:2014-07-16 13:58

返回列表

2014年新托福写作范文:Sleep

 

  Sleet is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper, your sleep cycle is as follows. When you fist drift off into slumber, your eyes will roll about a bit, you temperature will drop slightly, your muscles will relax, and your breathing well slow and become quite regular. Your brain waves slow and become quite regular. Your brain waves slow down a bit too, with the alpha rhythm of rather fast waves 1 sleep. For the next half hour or so, as you relax more and more, you will drift down through stage 2 and stage 3 sleep. The lower your stage of sleep. Slower your brain waves will be. Then about 40to 69 minutes after you lose consciousness you will have reached the deepest sleep of all. Your brain will show the large slow waves that are known as the delta rhythm. This is stage 4 sleep.

  You do not remain at this deep fourth stage all night long, but instead about 80 minutes after you fall into slumber, your brain activity level will increase again slightly. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids as if you were looking at something occurring in front of you. This period of rapid eye movement lasts for some 8 to 15 minutes and is called REM sleep. It is during REM sleep period, your body will soon relax again, your breathing will slip gently back from stage 1 to stage 4 sleep----only to rise once again to the surface of near consciousness some 80 minutes later.

 

阅读调查

阅读文本, 您觉得有帮助吗?

您需要内部讲义资料吗?

您最近有出国留学的打算吗?

您的姓名
您的电话
提交获取帮助
  • 托福冲刺班 内部讲义,代报名服务 托福冲刺钻石班,新航道托福冲刺钻石班,托福冲刺钻石班哪里好 在线咨询
  • 托福核心班 内部讲义,代报名服务 托福核心班 在线咨询
  • 托福Junior一对一 在线咨询
  • 托福Junior一对二 托福Junior一对二 在线咨询
  • 托福飞跃A计划 托福飞跃A计划 托福飞跃A计划 在线咨询
  • 托福飞跃B计划 托福飞跃B计划 托福飞跃B计划 在线咨询
  • 关注新航道动态

    关注新航道动态

  • 关注获取学习资料

    关注获取学习资料

课程咨询热线
400-0311-689
集团客服电话
400-097-9266

新航道石家庄学校:石家庄槐安路和建华大街东北角万达广场写字楼B座二层

邮编:050000