首页
登录
职称英语
When a person falls asleep, all activity decreases and the muscles relax. Th
When a person falls asleep, all activity decreases and the muscles relax. Th
游客
2023-07-11
70
管理
问题
When a person falls asleep, all activity decreases and the muscles relax. The heartbeat and breathing【C1】______slow down. The person slowly becomes less aware【C2】______what may be happening all around. A sleeping person changes the【C3】______of the entire body at least a dozen times during about eight hours of sleep. The head, arms, or legs are moved more often.
Scientists study sleep【C4】______an instrument. Whether a person is【C5】______or asleep, the brain gives【C6】______electrical waves. The instrument measures and records these waves. The brain of an awake, 【C7】______person gives off about 10 small waves a second. As a person falls deeply【C8】______sleep, the brain sends out slower but 【C9】______waves. The slowest, largest waves【C10】______during the first two or three hours of a period of sleep. During slow-wave sleep, mental activity【C11】______down but does not stop. Persons awakened【C12】______slow-wave sleep can often【C13】______unclear thoughts that they had while asleep. Periods of small, fast waves, 【C14】______to those of an awake person, occur at【C15】______during sleep. During these periods of fast brain wave activity, the sleeper’s eyes move rapidly as though they were watching the【C16】______of a dream. A sleeper who is awakened during such a period probably will recall dreaming and remember【C17】______of the dream. Sleep during these periods is called dreaming sleep or REM (Rapid Eye Movement) sleep. An eight-hour period of sleep includes from three to five periods of dreaming sleep. The dreaming sleep periods【C18】______from 5 to 30 minutes【C19】______and occur every 90 to 100 minutes. The【C20】______dream periods last longer than the earlier ones. [br] 【C19】
选项
A、each
B、every
C、one
D、single
答案
A
解析
语义衔接题。前文提到八小时的睡眠中包括三到五个做梦睡眠期,由此可知此处说的是每一次做梦中的睡眠持续5到30分钟,故答案为[A]each。[B]every为强干扰项,其强调的是“整体”,而且不放在句末,由此排除[B]。
转载请注明原文地址:https://tihaiku.com/zcyy/2828149.html
相关试题推荐
Planningisaveryimportantactivityinourlives.Itcangivepleasure,ev
Planningisaveryimportantactivityinourlives.Itcangivepleasure,ev
Planningisaveryimportantactivityinourlives.Itcangivepleasure,ev
Planningisaveryimportantactivityinourlives.Itcangivepleasure,ev
Planningisaveryimportantactivityinourlives.Itcangivepleasure,ev
Weatheritmakesyouabetterpersonornot,acollegeeducationis______(很可能长
Thenumberof______speciesdecreaseseveryyearasnaturalhabitatsdisappear.
Recently,astudentusedhisPersonalDigitalAssistant(PDA)tofilmafema
Recently,astudentusedhisPersonalDigitalAssistant(PDA)tofilmafema
Recently,astudentusedhisPersonalDigitalAssistant(PDA)tofilmafema
随机试题
Tomanyenvironmentalists,theextinctionofplants—accompaniedbytheincreasin
[originaltext]ThreeItalianconsumergroupshaveaccusedMcDonald’sofburde
TheJourneyofSelfImprovementI.Phasesofthejourneyof
Somepeoplefeelsadordepressedduringthewintermonthsinnorthernareaso
反映评估的稳定性的是()A.区分度 B.难度 C.效度 D.信度
2010年3月31日,甲公司与丙公司签订合同,自丙公司购买不需安装的设备供管理部
为了解市民家庭存书(不含教材教辅)阅读和共享意愿情况,某市统计局成功访问了18岁
教育与人类社会共始终,为一切人一切社会所需品,是新生一代的成长和社会生活的延续和
医德规范的具体表现形式应除外的是A.法规 B.誓词 C.宣言 D.守则
甲公司的推销人员若销售100件以内(含100件)商品,每月固定工资2000元,在
最新回复
(
0
)