首页
登录
职称英语
[originaltext] No one knows exactly why we sleep. But scientists have learne
[originaltext] No one knows exactly why we sleep. But scientists have learne
游客
2023-08-03
73
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、Reasons for People’s Sleeping.
B、Four Stages of Sleep.
C、Reasons for sleepwalking.
D、A Sleep Experiment.
答案
B
解析
What’s the topic of the passage?
转载请注明原文地址:https://tihaiku.com/zcyy/2894556.html
相关试题推荐
[originaltext]Thegreatestimpetusforglobalizationtodayisnodoubtthe
[originaltext]TheInternethascreatedawholenewworldofsocialcommunic
[originaltext]M:Whatdidyousayyouweregoingtotakeupasacareer?W:Law
[originaltext]Todaywe’lltalkaboutnationalparksintheUnitedStates.
[originaltext]Themostobviousdifferencebetweenradioandtelevisionist
[originaltext]Notlongagoitwasassumedthatthedangersmanwouldmeeti
[originaltext]M:Interestinglecturetoday,didn’tyouthink?W:Well,Isuppos
[originaltext]TokyohasreplacedMoscowastheworld’smostexpensivecity
[originaltext]AmericanIndiansgrewandsmokedtobaccobeforeColumbuscame
[originaltext]M:Hi,Sue.IwaswonderingifyoucouldfillmeinonMonday’sc
随机试题
[originaltext]W:Here’sanadforanapartmentwithtwobedrooms.It’snearthe
[originaltext](13)Agrowingnumberofwomenaredevelopingsomethingcalle
下列哪些甲状腺结节考虑恶性可能()A.儿童甲状腺结节 B.年轻男性多发甲状
拒绝接受档案行政管理部门监督检查的行为属于()。A.违法行为 B.违纪行为
高血压干预的目标人群不包括()A.高血压患者 B.社会公众 C.长期过
Ifateacherasksstudentstocollect,c
患儿,男,1岁3个月,因仍不能独立行走而就诊。经询问其母亲,该患儿一直睡眠不好,
B企业为扩大产能,投资1.5亿元,新建12000m2厂房,新建厂房为新型钢结构,
供热站内泵的试运转应在其各附属系统单独试运转正常后进行,且应在有介质情况下进行试
下列安全生产管理制度中,最基本、也是所有制度核心的是()。A.安全生产教育
最新回复
(
0
)