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
What’s the topic of the passage?
What’s the topic of the passage?
admin
2009-06-24
65
问题
What’s the topic of the passage?
No one knows exactly why we sleep, But scientists have learned a lot about how we sleep. From sleep experiments, scientists have learned that there are four different stages of 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 eau this kind of sleep dozing. Scientists call it stage one sleep.
Next, if you are not awakened, you drift into a deeper sleep. Your pulse and breathing become even slower than they were during stage one sleep. But you can still be awakened quite easily. If you take a cat nap, you probably will not get any further than this stage of sleep, which is called stage two.
If you sleep longer than about twenty minutes, you go into the third stage of sleep. Your body is very relaxed. It would take a loud noise to wake you up.
You have probably 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 deepest kind of sleep. If someone wakes you up during stage four, you might feel very confused. It might take you a few minutes to get used to being awake.
选项
A、People can’t sleepwalk.
B、Your body becomes very relaxed.
C、You can still be awakened without difficulty.
D、If you are awakened, you might feel very perplexed.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/4CHd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
TheCentralProblemofEconomicsThecentralproblemofeconomicsistosatisfythepeople’sandnation’swants.Theproblemwe
Whatdoestherecentpollshow?WhichofthefollowingwasNOTaconstraintonone’schoiceofsoulmateintheolddays?
OntheTrialoftheHoneyBadgerOnarecentfieldtriptotheKalahariDesert,ateamofresearcherslearnalotmoreabout
Becauseofthepopularityoftheregion,itisadvisabletobookhotelsinadvance.
Hecollapsedfollowingavigorousexercisesessionathishome.
EatMore,WeighLess,LiveLongerClevergeneticdetectiveworkmayhavefoundoutthereasonwhyanear-starvationdietprolong
Whichofthefollowingreasonsdoesnotexplainthefactthat"knittingwasnolongeraskillworthpassingdownfrommotherto
Whoareroadtripvacationsespeciallypopularwith?WhatwillHawkinsdowhenheseessomethinginterestingonaroadtrip?
OnceDailyPillCouldSimplifyHIVTreatmentBristol-MyersSquibbandGileadScienceshavecombinedmanyHIVdrugsintoasi
______hasasmallandcomplexkeyboardandscreen?______mightcarryoutfinancialtransactions?
随机试题
委派主要解决哪两个问题?
关于肝性脑病患者脑电图的表现说法正确的是
有效声束宽度影响到系统成像的
对于子宫内膜异位症的治疗,以下哪项恰当
患者,女性,右侧胸腔积液,其多喜哪种体位
医患关系出现物化趋势的最主要原因()
企业发行企业债券的总面值可以大于该企业的自有资产净值。()
在一定时期现金需求总量一定的情况下,同现金持有余额成反比的是()。
()不属于生产物流的空间组织形式。
下列不属于学校教育中常规教育媒介的是()。
最新回复
(
0
)