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
Look at the ten statements for this part. You will hear a passageabout "A Research on Sleep ". You will listen to it twice.
Look at the ten statements for this part. You will hear a passageabout "A Research on Sleep ". You will listen to it twice.
admin
2018-11-04
89
问题
Look at the ten statements for this part.
You will hear a passageabout "A Research on Sleep ". You will listen to it twice.
Decide whether you think each statement is right(R), wrong(W)or not mentioned(NM).
Mark your answers on the Answer Sheet.
The lower your stage of sleep, the slower your brain waves will be.
Look at the ten statements for this part.
You will hear a passage about "A Research on Sleep ". You will listen to it twice.
Decide whether you think each statement is right(R), wrong(W)or not mentioned(NM).
Mark your answers on the Answer Sheet.
A Research on Sleep
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 predominating for the first few minutes. This is called Stage 1 sleep.
For the next half hour or so, as you relax more and more, you will drift down through Stage 2 and Stage 3 sleep. The lower your stage of sleep, the slower your brain waves will be. Then, about 40—60 minutes after you lose consciousness, you will have reached the deepest sleep of all. Your brain waves will show the delta rhythm. This is Stage 4 sleep.
You may think that you stay at this deep fourth stage all the rest of the night, but that turns out not to be the case. Instead, about 80 minutes after you fall into slumber, your activity cycle placed by the activity pattern of brain waves increases. Your eyes will begin to dart around under your closed eyelids as if you were looking at something occurring in front of you. This period of Rapid Eye Movements lasts for some 8-15 minutes and is called REM sleep. During both light and deep sleep, the muscles in your body are relaxed but capable of movement. However, as you slip into REM sleep, a very odd thing occurs — most of the voluntary muscles in your body become paralyzed. Although your brain shows very rapid bursts of neural activity during REM sleep, your body is incapable of moving. In more technical terms — as we will see later in this chapter — we can say that REM sleep is accompanied by extensive muscular inhibition.
That is the end of Part 3. You now have 20 seconds to copy your answers on the Answer Sheet.
选项
A、Right
B、Wrong
C、Not Mentioned
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/0I2d777K
本试题收录于:
BFT听力题库国际化人才外语考试(BFT)分类
0
BFT听力
国际化人才外语考试(BFT)
相关试题推荐
Writeaboutthefollowingtopic:Technologygivesyoungpeopletodayknowledgeandpowerthattheyhaveneverhadbefore.Th
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Usingtheinformationinthetext,completeeachsentence14-18withanexpressionfromthelistbelow.Foreachsentence(14
Usingtheinformationinthetext,completeeachsentence14-18withanexpressionfromthelistbelow.Foreachsentence(14
Readthearticlebelow.Choosethebestsentencefromthelistonthenextpagetofilleachofthegaps.Foreachgap(1
Readthearticlebelow.Choosethebestsentencefromthelistonthenextpagetofilleachofthegaps.Foreachgap(1
Lookatthetenstatementsforthispart.Youwillhearapassageabout"GreatTransformation".Youwilllistentoittwice
随机试题
试确定常数a,b的值,使f(χ)在点处可导。
最早B超可见妊娠环为妊娠
根据《建设工程安全生产管理条例》,施工企业的项目负责人应当由取得相应执业资格的人员担任,其对建设工程的安全负有的主要职责为()。
某施工单位承接了一座公路隧道的土建及交通工程施工项目,该隧道为单洞双向行驶的两车道浅埋隧道,设计净高5m,净宽12m,总长1600m,穿越的岩层主要由页岩和砂岩组成,裂隙发育,设计采用新奥法施工、分部开挖和复合式衬砌。进场后,项目部与所有施工人员签订了安全
证券公司从事期货中间介绍业务的工作人员不得买卖()。
内部融资不能完全满足公司持续、快速的销售收入增长需求时,说明公司利润率低。()
根据文件来源,在一个机关内部可将公文分为()
设某箱装有100件产品,其中一、二、三等品分别为80件、10件和10件,现从中随机抽取一件,记Xi=(i=1,2,3).求(X1,X2)的联合分布;
有以下程序段:intk=0;while(k=1)k++;while循环执行的次数是______。
下列4种不同数制表示的数中,数值最小的一个是
最新回复
(
0
)