首页
登录
职称英语
[originaltext]No one knows exactly why we sleep. But scientists have learned a
[originaltext]No one knows exactly why we sleep. But scientists have learned a
游客
2023-08-01
74
管理
问题
No one knows exactly why we sleep. But scientists have learned a lot about how we sleep, From sleep experiments, scientists have learned that there are four different stages of sleep.
When you first fall asleep, your heart starts to beat more slowly and your breathing slows down. If something wakes you, you might not think that you had been asleep. Some people call this kind of sleep dozing. Scientists call it Stage One sleep. Next, if you are not awakened, you drift into a deeper sleep. Your pulse and breathing become even slower than they were during Stage One sleep. But you can still be awakened quite easily. If you take a cat nap, you probably will not get any further than this stage of sleep, which is called Stage Two.
If you sleep longer than about twenty minutes, you go into the third stage of sleep. Your body is very relaxed. It would take a loud noise to wake you up.
You have probably heard of people who walk in their sleep. No one knows what makes people sleepwalk. But a person can sleepwalk only during Stage Four. This is the deepest kind of sleep. If someone wakes you up during stage four, you might feel very confused. It might take you a few minutes to get used to being awake.
选项
A、Stage One.
B、Stage Two.
C、Stage Three.
D、Stage Four.
答案
A
解析
At which stage is sleep called dozing?
细节题。文章分别介绍了睡眠的四个阶段,一些人把第一个阶段叫做sleep dozing。
转载请注明原文地址:https://tihaiku.com/zcyy/2887724.html
相关试题推荐
【B1】[br]【B11】[originaltext]LudwigvanBeethovenwasoneofthegreatestc
【B1】[br]【B10】[originaltext]LudwigvanBeethovenwasoneofthegreatestc
【B1】[br]【B8】[originaltext]LudwigvanBeethovenwasoneofthegreatestco
【B1】[br]【B7】[originaltext]LudwigvanBeethovenwasoneofthegreatestco
【B1】[br]【B6】[originaltext]LudwigvanBeethovenwasoneofthegreatestco
[originaltext]WhenmysonRyansawaT-shirtonsalefor5dollarsmarkedd
[originaltext]WhenmysonRyansawaT-shirtonsalefor5dollarsmarkedd
[originaltext]MatthewHobbswassixteenyearsold.Hehadbeenatthesame
[originaltext]MatthewHobbswassixteenyearsold.Hehadbeenatthesame
[originaltext]M:Hello,Ihaveareservationfortonight.W:Yourname,please.
随机试题
InAmericathetraditionaldividinglinebetween"east"and"west"isA、MountRus
AdvertisementforaTaxiCompanyRecentl
[originaltext]M:WhenIsayIliveinSweden,peoplealwayswanttoknowabout
某开发商拟在其分区区内开发一能容纳人口约10000人左右的多层居住小区,在规划控
行程开关(或限位开关)的常闭触点是()。
一般以()为计算基数,按照部门或行业规定的工器具及生产家具费费率计算。A:进口
结构式家庭治疗模式的观察评估的基本框架包括()。A.家庭的形态和结构 B.家庭
服务对象:“父亲对我很严厉,小时候压力挺大,一言难尽啊!但我有很多小伙伴,下了课
()是一项实现系统安全危害分析的初步或初始工作。A.安全检查表法 B.预
管道闭气试验适用条件()。A、任何管道 B、混凝土类的无压管道在回填土前进行
最新回复
(
0
)