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
Sleep is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in cycles.(46)
Sleep is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in cycles.(46)
admin
2009-06-15
47
问题
Sleep is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in cycles.(46). When you first drift off into slumber, your eyes will roll about a bit, your temperature will drop slightly, your muscles will relax, and your breathing will slow and become quite regular. Your brain waves slow a bit too, with the alpha rhythm of rather fast waves predominating for the first few minutes.(47). For the nest half hour or so, as you relax more and more, you will drift clown through stage 2 and stage 3 sleep.(48). Then, about 40 to 60 minutes after you lose consciousness, you will have reached the deepest sleep of all. You brain waves will show the large slow waves that are known as the delta rhythm. This is stage 4 sleep.
You do not remain at this deep fourth stage all night long.(49). The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids as if you were looking at something occurring in front of you.(50). It is during REM sleep that most dreams seem to occur. Provided that you do not wake up during the first REM sleep period, your body will soon relax again, your breathing will grow slow and regular once more, and you will slip gently back from stage 1 to stage 4 sleep—only to rise once again to the surface of near consciousness some 80 minutes later.
A.This is called stage Ⅰ sleep.
B.If you are an average sleeper, your sleep cycle is as follows.
C.But instead about 80 minutes after you fall into slumber, your brain activity level will increase again slightly.
D.Sleep is very useful for a person’s health.
E.This period of rapid eye movement lasts for some 8 to 15 minutes and is called REM sleep.
F.The lower your stage of sleep, the slower your brain waves will be.
选项
答案
B
解析
下文开始介绍当人入睡后的情况,这里需要一个过渡,而B中的as follows表明该句放入这里最合适。
转载请注明原文地址:https://jikaoti.com/ti/cLmsFFFM
本试题收录于:
职称英语综合类B级题库职称英语分类
0
职称英语综合类B级
职称英语
相关试题推荐
Thegovernmentproposedchangestothevotingsystem.
LessIsMoreItsoundsallwrong—drillingholesinapieceofwoodtomakeitmoreresistanttoknocks.Butitworksbecause
Acompletechangeinpolicyisneededifrelationsareevertoimprove.
I’llBeBachComposerDavidCopeistheinventorofacomputerprogramthatwritesoriginalworksofclassicalmusic.Ittoo
LocalNewspapersinBritain1Britainhasalargecirculation(发行量)ofthenationalnewspapers.TheDailyMirrorandTheDailyExp
A.Howdoesthe"grid"work?B.PowersharedC.JustmakearequestD.LimitationsofpresentInternetuseE.Distanceisnota
MotherNatureShowsHerStrengthTornadoes(龙卷风)andheavythunderstormsmovedacrosstheGreatLakesandintoTrumbullCount
HeiscertainthatthedictionaryisjustwhatIwant.
ATheOrganizationofAnArticleBCheckYourReadingSpeedCAWaytoIncreaseYourReadingSpeedDCheckYourUnderstandin
Itwasamomentmostbusinessexecutiveswouldpausetosavor:latelastyear,GermansportinggoodspioneerAdidaslearnedthat
随机试题
维系蛋白质一级结构的化学键是
连续刚构桥中跨实际合扰温度与设计合拢温度不符时通常采取的措施为( )。
对留购的智能机器人,()。该批设备进口时应填报()。
一般情况下,我国行政罚款实行“裁执分离”,即做出罚款决定与执行罚款决定的不能成为同一主体。()
意大利评论界长期以来一直把薄伽丘的《十日谈》和但丁的《神曲》相提并论,称之为《人曲》。这是因为它()。
伴随着电子商务的普及,消费者成为个人信息泄露的主要受害群体。伴随信息泄露而至的垃圾短信、骚扰电话、精准诈骗日益___________着人们的隐私、财产甚至生命安全;同时,消费者个人信息泄露还容易破坏市场秩序、制约经济发展,滋长各类犯罪、破坏社会稳定,甚至_
货币可自由兑换的条件是什么?
功能对等
在超市购物后,张林把七件商品放在超市的传送带上,肉松后面紧跟着蛋糕,酸奶后面接着放的是饼干,可口可乐汽水紧跟在水果汁后面,方便面后面紧跟着酸奶,肉松和饼干之间有两件商品,方便面和水果汁之间有两件商品,最后放上去的是一只蛋糕。如果上述断定为真,那么
NarratorListentopartofalectureinanastronomyclass.TheprofessorisdisoussingHauey’scomet.Nowgetreadyto
最新回复
(
0
)