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 Sleep is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in c
Sleep Sleep is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in c
admin
2011-05-17
65
问题
Sleep
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 down a bit too, with the alpha rhythm of rather fast waves predominating for the first few minutes. ______【47】For the next half hour or so, as you relax more and more, you will drift down 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. Your 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, but instead about 80 minutes after you fall into slumber, your brain activity level will increase again slightly. ______【49】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 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 1 sleep.
B. This period of rapid eye movement lasts for some 8 to 15 minutes and is called REM sleep.
C. The lower your stage of sleep, the slower your brain waves will be.
D. In stage 4 sleep people tend to dream.
E. If you are an average sleeper, your sleep cycle is as follows.
F. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves.
选项
答案
C
解析
睡眠越深入, 脑电波就越缓慢。接下来两句话说:大约在开始睡眠后的40到60分钟, 你将进入沉睡状态。这时脑电波表现为巨大的缓波, 被称为δ节奏。可以看出沉睡和脑电波的缓波为正比发生的, 因此选C。
转载请注明原文地址:https://kaotiyun.com/show/i2md777K
本试题收录于:
职称英语卫生类B级题库职称英语分类
0
职称英语卫生类B级
职称英语
相关试题推荐
Readthefollowingarticleandanswerquestions9-18onthenextpage.WhyAreWomenMoreVulnerabletoBrokenHearts?0
Readthefollowingarticleandanswerquestions9-18onthenextpage.WhyAreWomenMoreVulnerabletoBrokenHearts?0
Readthefollowingpassageandanswerquestions9-18.1.Mostyoungpeopleenjoysomeformsofphysicalactivity.Itmaybewalk
Youwillhearapassageabout"SurvivingCulturalShock".Forquestions9-13,choosefromthelistA-Fthefivestagesofc
Youwillhearapassageabout"SurvivingCulturalShock".Forquestions9-13,choosefromthelistA-Fthefivestagesofc
CONVERSATION2(Questions5-8)MESSAGEProblem:Therewasa【L5】______problem.Mr.Franks’companyha
THOMASEDISONOnthenightof21October1931,millionsofAmericanstookpartinacoast-to-coastceremonytocommemorate
THOMASEDISONOnthenightof21October1931,millionsofAmericanstookpartinacoast-to-coastceremonytocommemorate
THOMASEDISONOnthenightof21October1931,millionsofAmericanstookpartinacoast-to-coastceremonytocommemorate
THOMASEDISONOnthenightof21October1931,millionsofAmericanstookpartinacoast-to-coastceremonytocommemorate
随机试题
"见呕吐知病在胃"的诊断原理是
下列哪种病因不是急性胃炎的病因
A.心B.肝C.脾D.肺E.肾按五体与五脏的关系,骨属于
全面深化改革,要坚持社会主义市场经济改革方向,以促进社会公平正义、()为出发点和落脚点,进一步解放思想、解放和发展社会生产力。
发生火灾时,湿式喷水灭火系统是由()探测火灾。
对于住宅项目,附加产品定位的主要内容是()。
你是一名新进公务员,你的领导和同事都有不同的专业背景、个性、兴趣,你怎么做才能处理好跟他们的关系,从而得到他们的支持和帮助呢?
设b为常数.(Ⅰ)求曲线的斜渐近线l的方程;(Ⅱ)设L与l从x=1延伸到x→+∞之间的图形的面积A为有限值,求b及A的值.
Althoughtheaccidentdidverylittle______tothecar,Istillsuggestthatyoudrivemorecarefullynexttime.
THEINTRINSICCOMPLEXITYOFCONCEPTSThewordsdiscussedsofarhavebeenlimitedtoonetype:thosewhosemeaningidentifies
最新回复
(
0
)