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
19
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?
转载请注明原文地址:https://tihaiku.com/zcyy/2894557.html
相关试题推荐
[originaltext]Therehavebeenmanyimprovementsinhowweatherexpertspred
[originaltext]Majorworldautomakershavealreadyinvestedheavilyinelect
[originaltext]Majorworldautomakershavealreadyinvestedheavilyinelect
[originaltext]Majorworldautomakershavealreadyinvestedheavilyinelect
[originaltext]Majorworldautomakershavealreadyinvestedheavilyinelect
[originaltext]Thenon-governmentalenvironmentalgroupGreenpeacereportst
[originaltext]Americanssufferfromanoverdoseofwork.Regardlessofwho
[originaltext]Americanssufferfromanoverdoseofwork.Regardlessofwho
[originaltext]Thenewyearalwaysbringswithitaculturaltraditionofne
[originaltext]M:Asweprobablyknow,logstructuresaregainingpopularity
随机试题
新凯恩斯主义与新古典宏观经济学的总供给曲线的形状有什么不同?为什么不同?这种不同
A.在正常咀嚼运动中,咀嚼食物的力大约只为牙周组织所能支持的力量的一半,而在牙周
某混凝土试块强度值不满足规范要求,但经法定检测单位对混凝土实体强度经过法定检测后
基本心理过程是( )过程。A.情感 B.认识 C.意志 D.感知
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A
轨迹应为:A.直线 B.圆 C.拋物线 D.直线与圆连接
外用可发泡的有A.大蒜 B.毛茛 C.斑蝥 D.白芥子
抗病毒药不包括()A.碘苷 B.氟尿嘧啶 C.阿糖腺苷 D.阿昔洛韦
对于大型工程为了检验承包人的设计、设备选型和运行情况等是否满足合同约定,会在缺陷
关于契税的说法,不正确的是( )。A.房屋买卖的承受单位和个人为契税的纳税人
最新回复
(
0
)