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
专升本
There is no creature that does not need sleep or complete rest every day. If you want to know why, just try going without sl
There is no creature that does not need sleep or complete rest every day. If you want to know why, just try going without sl
admin
2012-12-31
23
问题
There is no creature that does not need sleep or complete rest every day.
If you want to know why, just try going without sleep for a long period of time. You will discover that your mind and body would become too tired to work properly. You would become irritable and find it hard to think clearly or concentrate on your work. So sleep is quite simply the time when the cells of your body recover from the work of the day and build up supplies of energy for the next period of activity.
One of the things we all know about sleep is that we are unconscious in sleep. We do not know what is going on around us. But that doesn’t mean the body stops all activity. The important organs continue to work during sleep, but most of the body functions are slowed down.
For example, our breathing becomes slower and deeper. The heart beats more slowly, and the blood pressure is lower. Our arms and legs become limp(柔软的) and muscles are at rest. It would be impossible for our body to relax to such an extent if we were awake. So sleep does for us what the most quiet rest can not do.
Your body temperature becomes lower when you are asleep, which is the reason people go to sleep under some kind of covers. And even though you are unconscious, many of your reflexes(习惯性思维) still work. For instance, if someone tickles(使觉得痒) your foot, you will put it away in your sleep, or even brush a fly from your forehead. You do these things without knowing it.
In the clause".., that we are unconscious in sleep," the word" unconscious means ______.
选项
A、untiring
B、unmoved
C、guiet
D、not knowing what is happening around
答案
D
解析
本词开始出现于文章的第三段第一句,接下来的一句是对该词的进一步解释,即not knowing what is going on around us.
转载请注明原文地址:https://kaotiyun.com/show/B5eC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
InEngland,peopleoftentalkabouttheweatherbecausetheycanexperiencefourseasonsinoneday.Inthemorningtheweather
Smokingisconsidereddangeroustothehealth.Alltheshopsare【56】tosellcigarettestochildren.Ourtobacco-seller,Mr.Jo
NotlongagoaCaliforniapolicemanstoppedadriverforfailingtostopataredlight.Askedhisname,thedriversaid,"Safet
BrightonisapopularseasidetownonthesouthcoastofEngland.Notlongago,somepolicemenwerevery【21】.There【22】severals
Television,itisoftensaid,keepsone【36】aboutcurrentevents,allowsonetofollowthe【37】developmentinscienceandpolitics
Goodlightinginfactoriesleadstogreatercomfort,higher______andproductivity.
Theycametoinspectthehouse______buyingit.
Inanagewhenwastetodaymeansalacktomorrow,makinguseofeveryavailableresourcebecomesmoreandmoreimportant.Ascoa
ItwasthefirsttimethatMarywaslate.She______upinthetraffic.
随机试题
我国可以直接选举的人大代表是()
九三学社的成员主要是()
早期肠道蛔虫病伴溃疡病者不可选用:
A.阴寒凝滞B.心血瘀阻C.两者均是D.两者均不是(1991年第115,116题)胸痛彻背,心悸,胸闷,气短,舌质黯,苔白,脉沉细,证属()
女,45岁,半年来剧烈活动时诱发胸骨后疼痛,休息数分钟可自行缓解,近5天来发作频繁,且于上楼或步行时均可诱发,夜间也有发作。BP130/80mmHg,P63次/分,该患者的最佳治疗方案是()
某年7月31日15时45分,在Q省G市某城市给水管网改造工程管沟土方施工时,发生沟壁土方坍塌,造成3人死亡,1人重伤,1人轻伤,直接经济损失40余万元。事故发生过程:Q省G市某城市给水管网改造工程,系市政建设工程。由市自来水公司负责实施建设。A建
甲建筑公司是某施工项目的施工总承包单位,乙建筑公司是其分包单位。2013年5月5日,乙建筑公司的施工项目发生了生产安全事故,应由()向负有安全生产监督管理职责的部门报告。
下列人物中主张教育生物起源论的是()。
设n阶实对称矩阵A的秩为r,且满足A2=A(A称为幂等阵).求:二次型XTAX的标准形;
Wateristasteless,odorless,andnearlycolorless(ithasaslighthintofblue).Itisa【C1】______thatisessentialtoallkn
最新回复
(
0
)