首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
No one knows exactly why we sleep. But scientists have learned a lot about how we sleep. When you first fall asleep, your hea
No one knows exactly why we sleep. But scientists have learned a lot about how we sleep. When you first fall asleep, your hea
admin
2012-05-08
29
问题
No one knows exactly why we sleep. But scientists have learned a lot about how we 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 it dozing (打盹). Next, you enter into a deeper sleep. Your pulse (脉搏) and breathing become even slower. But you can still be awakened quite easily. If you take a catnap, you probably will not get any further than this stage (阶段) of sleep. If you sleep longer than about twenty minutes, you get into the third one. Your body is very relaxed. It would take a loud noise to wake you up. You may have 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 last and deepest kind of sleep. If someone wakes you up, you might feel very uncomfortable and you need a few minutes to get used to being awake. After about ten minutes of this stage sleep, you go back to stage three and then to stage two. Then something quite different begins to happen. Your heartbeat becomes rapid. Your eyelids flutter (颤动), and your eyes move. This stage of sleep is called REM (rapid eye movement) sleep.
Most dreams happen during REM sleep. Scientists who study dreams often make noises or talk to sleeping people in the REM stage. They are trying to find out what effects noises can have on dreams, what causes dreams and how dreams might be helpful to people.
When a dream happens, the right order of stages of sleep is ______.
选项
A、2-3-4-1-2-3
B、1-2-3-4-3-2
C、1-2-3-4-1-2
D、3-4-1-2-3-4
答案
B
解析
根据文章所述,大部分梦都出现在REM阶段。结合第19题的分析可以看出,一个人所经历的睡眠阶段应该是从第一到第四阶段,然后再到第三、第二阶段。所以B是正确答案。
转载请注明原文地址:https://kaotiyun.com/show/NJwd777K
本试题收录于:
公共英语二级笔试题库公共英语(PETS)分类
0
公共英语二级笔试
公共英语(PETS)
相关试题推荐
WhilemyfatherwasanofficeroftheBritisharmyinSouthAfrica,welivedina【B1】house.One【B2】.myfather,mysisterand
Whileallthepassengersmadefortheexit,healoneremainedinhisseat,asif______toleavetheplane.
Youngpeopleandolderpeopledonotalwaysagree.Theysome-timeshavedifferentideasaboutliving,workingandplaying.But
OnOct.12,1989,someChinesescientistswereworkingatthecomputerstolookforthein-formationtheyneeded.Suddenlythe
Themanlearned______thattherewouldbeaconcertlastFri-day.Thewritermainlyshowsushis______.
Somepeoplebelievethatmentalactssuchasthinkingarenotdoneinthebrainalone,butthatone’smusclesalsojointhem.It
Whatcanbelearnedfromthetelephoneconversationyou’vejustheard?
NeitherSmithnorI______tobeblamedforthat.
Whatwillbetheweatherliketomorrow?
CARIFF,Walespoets,singersandmusiciansfromacrosstheglobegatheredinWalestocelebratethetraditionofstorytelling.
随机试题
明清小品是我国抒情小品文的鼎盛时期,那时的小品文特别注重【】
A.石菖蒲B.龙骨C.远志D.合欢皮E.酸枣仁
审查施工图预算的重点是()。
单位把账套建立起来以后,每个新的财务年度开始时,不再需要重建账套,只需要引入核算账套即可。()
对该企业职工的工资状况进行调查分析时,全部职工是()。以下公式正确的是()。
中华人民共和国公民申请个人住房贷款时,可提供的合法有效身份证件有()。
根据《旅行社条例》,导游人员有下列()情形的,由旅游行政管理部门责令改正,处1万元以上5万元以下的罚款。
某老师未经学生允许私自将学生的作文编人自己编著的优秀作文集,对该老师的做法叙述正确的是()
设求A100.
Whatshouldyouthinkaboutintryingtofindyourcareer?Youareprobablybetteratsomeschoolsubjectsthanothers.Thesema
最新回复
(
0
)