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
2016-07-17
79
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.【B1】______When you first drift off into slumber, your eyes will roll about a bit, your temperature will drop slighdy, 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.【B2】______For the next half hour or so, as you relax more and more, you will drift down through stage 2 and stage 3 sleep. 【B3】______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. 【B4】______Your eyes will begin to dart around under your closed eyelids as if you were looking at something occurring in front of you.【B5】______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 The delta rhythm will disappear, to be replaced by the activity pattern of brain waves.
B If you are an average sleeper, your sleep cycle is as follows.
C In stage 4 sleep people tend to dream.
D The lower your stage of sleep, the slower your brain waves will be.
E This period of rapid eye movement lasts for some 8 to 15 minutes and is called REM sleep.
F This is called stage 1 sleep.
【B5】
选项
答案
E
解析
这种迅速的眼球运动持续约8~15分钟,这一阶段睡眠被称之为快速眼动(REM)睡眠。接下来一句说:在REM睡眠阶段,你的肢体会很快再度放松,呼吸也再次放慢并变得有节奏,你会轻松地从第一阶段滑入第四阶段睡眠——直到大约80分钟后重新接近清醒状态。这里的REM和前一句相衔接。
转载请注明原文地址:https://kaotiyun.com/show/AILd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
ScienceandTechnologyThereisadifferencebetweenscienceandtechnology.【B1】______Sciencehastodowithdiscoveringth
CulturalDifferencesPeoplefromdifferentculturessometimesdothingsthatmakeeachotheruncomfortable,sometimeswithou
CulturalDifferencesPeoplefromdifferentculturessometimesdothingsthatmakeeachotheruncomfortable,sometimeswithou
CulturalDifferencesPeoplefromdifferentculturessometimesdothingsthatmakeeachotheruncomfortable,sometimeswithou
CulturalDifferencesPeoplefromdifferentculturessometimesdothingsthatmakeeachotheruncomfortable,sometimeswithou
Accordingtothepassage,theriskofachilddevelopinginsulin-dependentdiabetesislinkedtoallthefollowingfactorsEXCEP
Allthecarsaretestedfordefectsbeforeleavingthefactory.
随机试题
心力储备包括
男,65岁。右侧阴囊逐渐增大5年,无疼痛,查体见右侧阴囊肿大,大小约15cm×10cm,呈囊性,未触及睾丸,透光试验阳性,首先应考虑的诊断是
国际上通常认为,一国65岁以上人口占总人口()以上者为老龄化国家。
(2005年)下列结论中错误的是()。
下列不属于货物采购合同管理内容的是()。
请用不超过200字的篇幅,概括出给定材料所反映的主要问题。要求:全面,有条理,有层次。就给定资料所反映的主要问题,用1200字左右的篇幅,自拟标题进行论述。要求中心明确,内容充实,论述深刻,有说服力。
根据以下资料,回答下列问题。2008年国内增值税、消费税的总收入为16066.03亿元,出口货物退增值税、消费税5865.93亿元。那么,2008年中央财政总收入约为()亿元。
设A=,则(A+3E)-1(A2-9E)=______.
KeepingitintheFamilyForexpatparents,passingontheirnativelanguagescanbeastruggle."Youunderstandgrandmotherwhe
A、Tofindabetterrecordinthestore.B、Nottomissanychancetogettherecord.C、Tobuyallthefavoriterecords.D、Notto
最新回复
(
0
)