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
When a person falls asleep, all activity decreases and the muscles relax. The heartbeat and breathing【C1】______slow down. The pe
When a person falls asleep, all activity decreases and the muscles relax. The heartbeat and breathing【C1】______slow down. The pe
admin
2013-06-17
72
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.
【C10】
选项
A、produce
B、occur
C、strike
D、show
答案
B
解析
语义衔接题。分析句子结构可知,所填词应是不及物动词,可首先排除[A]prodHoe和[D]show。根据上下文可知,此处说的是大脑发出的电波的发生,故答案为[B] occur,其意为“发生,出现”。而[C]strike意为“罢工”,与此处语义不符。
转载请注明原文地址:https://kaotiyun.com/show/C4M7777K
0
大学英语四级
相关试题推荐
Ifyou’refindingittoughtolandajob,tryexpandingyourjob-huntingplantoincludethefollowingstrategies:Setyour
Imagineyouwenttoarestaurantwithadate;hadaburger,paidwithacreditcard,andleft.Thenexttimeyougothere,thew
Teenageboys,regardlessofrace,aremorelikelytodiefromgunshotwoundsthanfromallnaturalcausescombined.Bythet
Teenageboys,regardlessofrace,aremorelikelytodiefromgunshotwoundsthanfromallnaturalcausescombined.Bythet
ImaginebeingaslaveinancientRome.Nowrememberbeingone.Thesecondtask,unlikethefirst,iscrazy.If,asI’mguessing,
A、Inakitchen.B、Inamarket.C、Inagarden.D、Atapicnic.C[听力原文]W:Thesetor0atoesarehuge!Youmusthavewateredthemal
A、Nothing.B、Itismoreinterestedinexperiencedpeoplethanqualifiedpeople.C、Itismoreinterestedinqualifiedpeoplethan
A、Tomorrowmorning.B、Afterdinnertoday.C、Atexactlytherighttime.D、Rightnow.B此题为判断题。女士说自己现在得去买东西,在晚饭过后才会有空,男士说那就那时见吧。由此
ThepresidentoftheUnitedStateshasoneofthetoughestjobsintheworld.Hardlyanyoneelseiswatchedsocloselybysoman
Timeis,fortheaverageAmerican,ofutmostimportance.Tothe【B1】______visitor,Americansseemtobemoreconcernedwithgetti
随机试题
患者,男,70岁。因听力逐渐减退一年多,来院就诊。经过医生检查发现其骨传导功能正常,空气传导功能障碍。空气传导过程中,错误的说法是
预防性树脂充填操作不包括
下列哪项症状不符合脑疝前驱的表现:
在会计核算过程中,其主要的工作程序师填制和审核凭证、登记账簿和编制会计报表()
下列哪项情形发生时,股票上市首日实行价格涨(跌)幅限制?( )
根据个人所得税法律制度的规定,下列各项中,纳税义务人应当自行申报缴纳个人所得税的有()。
19世纪擅长表现农民题材和关怀农民生活的画家是()。
霍桑实验
婚姻关系成立的法定标志是()
The______emphasisonexaminationsisbyfartheworstformofcompetitioninschools.
最新回复
(
0
)