首页
登录
职称英语
Everyone needs to sleep. If we don’t sleep enough, we often feel tired and ir
Everyone needs to sleep. If we don’t sleep enough, we often feel tired and ir
游客
2024-07-28
12
管理
问题
Everyone needs to sleep. If we don’t sleep enough, we often feel tired and irritable (烦躁的,易怒的). It seems there are two purposes of sleep: active sleep and passive sleep. The passive sleep gives our body the rest that is needed, and prepares us for active sleep, in which dreaming occurs. In passive sleep, the body is at rest. The heat slows down. The body processes become very slow. We move very little. And the brain becomes very inactive. If a person continues to sleep, she or he enters a new stage, a more active stage. The body goes through several changes: the brain temperature rises, the amount of blood in brain increases, the body becomes very still and the brain becomes active, the eyes begin to move rapidly, and the person is dreaming.
Throughout the night, people alternate between passive and active sleep. During eight hours of sleep, people dream for a total of one and a half hours on the average.
Many people say that they don’t dream, or that they rarely dream. Doctors have studied the sleep cycles and have found that everyone dreams -- in fact, that everyone needs to dream in order to rest his or her mind.
There are (46) purposes of sleep: active sleep and passive sleep.
In (47) sleep, the body processes become very slow.
In (48) sleep, dreaming occurs.
In active stage, (49) becomes active.
People need active sleep to help them (50) .
选项
答案
two
解析
文章第一段第三句话明确说明有两种目的的睡眠。
转载请注明原文地址:https://tihaiku.com/zcyy/3695895.html
相关试题推荐
Everyoneneedstosleep.Ifwedon’tsleepenough,weoftenfeeltiredandir
Mr.Foxwasluckyenoughtohavechangedhisflightandarrivedsafe.A、福克斯先生改变了航
Ashewasreadingthenovel,theoldgrandma______(fall)asleep.fell本题考查动词的用法。
WhenanIndianwasoldenoughtoearnmoney,hisorherfriendswouldgivetrim
WhenanIndianwasoldenoughtoearnmoney,hisorherfriendswouldgivetrim
_____enoughtimetostudy,Iwouldhavebeenabletoenteruniversity.A、HaveI
Weareexcitedtolearnthateveryonecanvisitthenewly—builtmuseumforfree.
Sheis______girlthateveryonewilllikeheratthefirstsight.A、suchalovel
Ifthat’sthecase.couldyoupleasebebigenoughtosayyouaresorry?A、如果事实如此
Luckilyenough,wehavefinished(write)______thecompositioninaquarterofan
随机试题
Classificationgivessignificance【C1】______unrelatedandconsequentlymean
Myfather’sreactiontothebankbuildingat43rdStreetandFifthAvenuein
SupposeyouweretravellingtoSoutheastAsiaonacruiseship.Youhads
金融工作的永恒主题是()A.深化金融改革 B.服务三农和小微企业 C.
五行中火的“所胜”是( )。A.水 B.木 C.土 D.金 E.火
下列不属于Ⅱ类环境的是A:婴儿室 B:重症监护病房 C:注射室 D:产房
电磁力引起的振动:当铁磁共振时,()倍的磁密度的增加将导致励磁电流电压互感器的
体现教师职业与其他职业根本不同的是()。 A.教书育人B.为人师表 C.
20世纪70年代起,中国科学家()第一个开发出可以广泛种植的杂交水稻,大幅提高了
( )就是每个职业人的第一战场,是时间管理的行为标志。A.办公室 B.办公桌
最新回复
(
0
)