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
2017-08-29
18
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 (反射 动作)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"(Para.3) ,the word "unconscious" means______
选项
A、untiring
B、unmoved
C、quiet
D、not knowing what is happening around
答案
D
解析
本句出现于文章的第三段第一句,接下来的一句是对unconscious一词的进一步解释,即not knowing what is going on around us。
转载请注明原文地址:https://kaotiyun.com/show/9riC777K
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
Pickouttheappropriateexpressionsfromtheeightchoicesbelowandcompletethefollowingdialoguesbyblackeningthecorresp
Pickouttheappropriateexpressionfromtheeightchoicesandcompletethefollowingdialoguebyblackeningthecorrespondingl
Pickouttheappropriateexpressionfromtheeightchoicesandcompletethefollowingdialoguebyblackeningthecorrespondingl
Pickouttheappropriateexpressionfromtheeightchoicesandcompletethefollowingdialoguebyblackeningthecorrespondingl
Wouldyoueatabacon,lettuceandloveapplesandwich?Youprobablyhaveeatenmanyofthem.Loveapplewasthenameusedmany
Pickouttheappropriateexpressionsfromtheeightchoicesbelowandcompletethefollowingdialogsbyblackeningthecorrespo
Lawntennisisagoodsport,beingbasedontheancientgameofcourttennis,whichprobablycameupinEgyptorPersiasome250
Evenachildknowsthatnoddingheadmeans"Yes".Butsomepeoplewouldprobably【56】whentheyfirstcametoIndia.Whentheytal
Evenachildknowsthatnoddingheadmeans"Yes".Butsomepeoplewouldprobably【56】whentheyfirstcametoIndia.Whentheytal
随机试题
若要使某命令按钮获得控制焦点,可使用的方法是( )。
A.抑制黄嘌呤氧化酶B.抑制二氢叶酸还原酶C.抑制核糖核苷酸还原酶D.抑制胸苷酸合酶别嘌醇治疗痛风的机制主要是
属视觉心理物理学检查的有
下面苷类化合物中属于苯丙素氧苷的是
脾之大络,名为()
甲国公司在乙国投资建成地热公司,并向多边投资担保机构投了保。1993年,乙国因外汇大量外流采取了一系列的措施,使地热公司虽取得了收入汇出批准书,但仍无法进行货币汇兑并汇出,甲公司认为已发生了禁兑风险,并向投资担保机构要求赔偿。根据相关规则,下列选项正确的是
国际铁路联运适用于()方式。
根据物权法有关建筑物区分所有权的规定,下列各项中,应由业主共同决定的事项有()。
根据所给材料,回答问题。时下,原本被人在网上恶搞的“黑暗童话”,竟成了风行的儿童读物,并且为便于阅读(可获取更多利益吧),多是注音版的:优美的安徒生童话竟成了某些人恶搞的“①”——最后变成白天鹅的丑小鸭,凄惨地被宰杀,成了盘中“烤鸭”;“睡美人”
Lastyear,onegroupofstudentsinTaiwandidjustthat.Theytookchances-andendedupinjail.Morethan20studentspaidac
最新回复
(
0
)