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
3
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] 【C3】
选项
A、situation
B、position
C、angle
D、location
答案
B
解析
语义衔接题。由下一句The head,arms,or legs are moved more often.可知,在睡觉的过释中人改变的是睡觉的姿势,故答案为[B]position。[D]location也意为“位置”,但其一般表示某物所处的位置,而不用来表示人的姿势,故排除。
转载请注明原文地址:https://tihaiku.com/zcyy/2828133.html
相关试题推荐
【B1】[br]【B4】A、celebrityB、veteranC、personalityD、authorityB名词辨义题[考频:38]。选项均为
Wehavebeentoldthatundernocircumstances____________(不能用办公室里的电话)forperson
Abusinesslettershouldbewritteninaformalstyle______inapersonaltone.A
【S1】[br]【S9】FYoursearchisover.Iamthepersonyouarelookingfor.(你不用再去找了,
Anotherperson’senthusiasmwaswhatsetmemovingtowardthesuccessIhave
Anotherperson’senthusiasmwaswhatsetmemovingtowardthesuccessIhave
Anotherperson’senthusiasmwaswhatsetmemovingtowardthesuccessIhave
Anotherperson’senthusiasmwaswhatsetmemovingtowardthesuccessIhave
Anotherperson’senthusiasmwaswhatsetmemovingtowardthesuccessIhave
Anotherperson’senthusiasmwaswhatsetmemovingtowardthesuccessIhave
随机试题
Itisonlyrightthatthestarsshouldbepaidinthisway.Don’tthetop
[originaltext]Somediseasesareinfectious—likecoldsandfluButwhatabou
生物技术药物制剂
电动势的方向是从高电压指向低电位,即电压降的方向。
下列除哪项外,均为里实热证的表现A、身发高热 B、两颧娇红 C、口渴饮冷
能形成芽管和厚膜孢子的是A.新型隐球菌B.白假丝酵母菌C.克柔假丝酵母菌D.酿酒
从金融角度理解,( )是购买金融资产以期获得未来收益或资产增值后将其以更高价格
标的证券暂停交易,融资融券债务到期日未确定恢复交易日或恢复交易日在融资融券债务到
满足以下()条件时,留置权成立。A.债权人须合法占有债务人的动产 B
下列关于脚手架材料的说法中,正确的是()。A.钢丝绑扎木脚手架一般采用8号或
最新回复
(
0
)