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
After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recove
After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recove
admin
2010-01-12
74
问题
After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the activities of the previous day. The rest that you get while sleeping enables your body to prepare itself for the next day.
There are four levels of sleep, each being a little deeper than the one before. As you sleep, your muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts back and forth from one level of sleep to the other.
Although your mind slows down, from time to time you will dream. (10) Scientists who study sleep state that when dreaming occurs, your eyeballs begin to move more quickly (although your eyelids are closed). This stage of sleep is called REM, which stands for rapid eye movement.
If you have trouble failing asleep, some people recommend breathing very slowly and very deeply. Other people believed that drinking warm milk will help make you drowsy. There is also an old suggestion that counting sheep put you to sleep!
The average number of hours of sleep that an adult needs is
选项
A、approximately six hours
B、around ten hours
C、about eight hours
D、not stated here
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/vLJO777K
0
成人本科学位英语
相关试题推荐
In1965,theUnitedStatesmadeimportantchangesinitsimmigrationlaws,allowingmanymoreimmigrantstocomeandentirelyel
Therearethreeadditionalfactorsthatshouldbecitedinordertoensuregreatersuccessintheyouthmarket.Thefirstistha
BusinessinstitutionshavemoreprestigeinAmericansocietythananyotherkindoforganization,includingthegovernment.Most
Theworldhasneverbeenmorecloselyandintricatelyconnected.Ourbehavior【C1】______theenvironmentweallshare,andweare
Theworldhasneverbeenmorecloselyandintricatelyconnected.Ourbehavior【C1】______theenvironmentweallshare,andweare
Pricesoffoodandclothingandalmosteverythingelseinthecountryhavesteadilygoneup.Asaresult,thebuying______ofthe
ShipstravelingintheNorthAtlanticduringthewintermustbeconstantlywatchfultoavoidicebergs,largemassesofice______
Duringthelastthirtyyears,theinternationaleconomyhasexperiencedabasicchange.Im¬provementsintheInternetandother
随机试题
设f(x)=则∫-12f(x)dx=_______.
大便时溏时泄,水谷不化,稍进油腻则大便次数增多,面色萎黄,神疲倦怠,舌质淡苔白,脉细弱,治法为
女,30岁。因甲状腺功能亢进行甲状腺大部分切除术后3小时。切面进行性肿胀,患者出现呼吸困难,紧急行支气管插管后,呼吸困难解除。下一步的最佳处理措施是()
在施工现场,借助于登高用具或登高设施,在攀登条件下进行的高处作业,叫攀登作业。现场登高除借助建筑结构及脚手架设置的’登高设施(如马道)外,也可使用梯子或其他攀登设施。下列关于攀登作业的注意事项中,说法错误的是()。
会计职业道德与会计法律制度紧密相连,只要会计人员违背了会计职业道德,就必然会受到法律的制裁。()
Ifthereisonlyonelanguageusedinclassroominteraction,whichofthefollowingscandescribethiskindoflanguagecontext?
唐朝初年,“控弦数十万,霸有西域”的少数民族政权是()。
第二次世界大战以后,资本所有制发生了新的变化,生产资料由国家占有并服务于垄断资本的所有制形式是()
Mr.Bakerlikedshootingverymuchbuthewasnevergoodatit.Amonthagosomeofhisfriendsvisitedhiminhishouseandsaw
Nocountryshouldbeallowedto__________________(干涉其他国家的内部事务).
最新回复
(
0
)