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
Sleep Sleep is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in
admin
2010-04-24
75
问题
选项
答案
Sleep Sleep is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper, your sleep cycle is as follows. When you first drift off into sleep, 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 a rhythm of rather fast waves 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 to 69 minutes after you lose consciousness you will have reached the deepest sleep of all. Your brain will show the large slow waves. This is Stage 4 sleep.
解析
转载请注明原文地址:https://www.kaotiyun.com/show/692K777K
0
专业英语四级
相关试题推荐
Since1895theNationalTrust(国家文物信托基金会)hasworkedforthepreservationofplacesofhistoricinterestandnaturalbeautyi
ContentsChapterOne——Basicelements:PrinciplesandgeneralframeworkofGermandevelopmentpolicy........................1D
Whydoesthehonestpublichavetopayhigherpriceswhentheygototheshops?Accordingtothepassage,law-abidingcitizens
WhatdopeoplethinkofthepresentEuropeanpoliticalleaders?
Jimmyearnshislivingby______worksofartinthemuseum.
Thebypassoperation(心脏搭桥手术)【C1】______open-heartsurgeryinwhichthephysiciantakesaveinfromthepatient’slegand【C2】___
Whatkindofweatherwillitbewhendistantobjectssuch~ashillsandtalltreesseemtobeveryclearandnear?
Idon’tthinktheblouseneedany______.Itfitsyouperfectly.
Mostpeopleexperiencecomputersas"end-users"ofpackagedprograms.Unfortunatelythewritersoftheseprogramscan’tknowthe
Theevolutionofsexratiohasproduced,inmostplantsandanimalswithseparatesexes,approximatelyequalnumbersofmalesan
随机试题
________,努力加餐饭。
Luckily,thebacktiresoftheircarstayedontheroad.Otherwise,theyoungcouplewouldhavedrivenrightintoapittwentyf
盐酸吗啡的鉴别试验(Marquis反应)亚硝酸钠滴定法
以下哪项属于市场经济的基本特征()。
下列各项中不属于《行政许可法》的调整范围的是()。
为了提高企业以及居民的节水意识,某市实行阶梯水价。按年度用水量计算,第一阶梯用水量不超过180立方米,水价为每立方米5元;第二阶梯用水量在180~260(不包括180)立方米之间,水价为每立方米7元;第三阶梯用水量为260立方米以上,水价为每立方米9元。某
在谈到法律规则与法律原则的关系时:甲同学认为,法律原则既是立法者立法时所遵循的界限,又是法的实施者所应遵守的范围;乙同学认为,如果按甲的逻辑,既然立法者心中已有了原则,他就应该按此制定规则,即所有的规则都是这些原则的体现,都已经贯彻了这些原则,法律实施者只
Howdoesliterarystyleevolve?Surprisingly,【C1】______lieinwordswithseeminglylittlemeaning,suchas"to"and"that".
对于图书管理数据库,将图书表中"人民邮电出版社"的图书的单价涨价5%。请对下面的SQL语句填空:UPDATE图书【】WHERE出版单位="人民邮电出版社"
A、Hisuncleislikeachild.B、Hisunclelikeschildren.C、Thepicturelooksterrible.D、Thepicturelooksfunny.C
最新回复
(
0
)