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
65
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:http://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
Lookatthenotesbelow.Youwillhearawomanleavingamessageaboutm
PresidentGeorgeW.Bush
Thewritersofmurderstoriesgotoagreatdealoftroubletokeepusguess
[originaltext]DrSimons:Well;asIsaid,therewerethreeareasofinterest,s
设抛物线y=x2+2ax+b与x轴相交于A,B两点,点C坐标(0,2),若三角形
在Excel中,字符型数据可以是文本型的数字。在默认状态下,输入数字时系统会自动
在地面无法查明水文地质条件时,应当在( )采用物探、钻探或者化探等方法查清采掘
以下是某基金销售机构编制的公募证券投资基金宣传推介材料中的描述,不符合法律法规规
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
关于会计核算中历史成本计量原则的说法,正确的是( )。A.负债按照现在偿付该项债
最新回复
(
0
)