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
Throughout history man has observed such natural cycles as the rising and setting of the sun, the ebb and flow of the ocean tide
Throughout history man has observed such natural cycles as the rising and setting of the sun, the ebb and flow of the ocean tide
admin
2016-04-01
99
问题
Throughout history man has observed such natural cycles as the rising and setting of the sun, the ebb and flow of the ocean tides, and the changes of the seasons. The【C1】______nature of these events provided people with a measure of【C2】______about things to come and give them reason to reflect on their past and plan for their future. The regularity of such social activities as work hours, meal times, and holiday schedules【C3】______the extent to which human activity itself is organized in cycles.
Recently,【C4】______effort has been spent investigating the effect of various biological rhythms in the human body.【C5】______, interest in these rhythms at least in part results from man’s basic desire to predict future behavior.
The human body【C6】______a number of repeatable rhythms: heartbeats, breathing rates, brain waves and other physiological processes within the human machine.
Scientists studying rhythms in humans have measured sleep patterns and attention【C7】______over periods of several days, and have【C8】______the fact that the cycles exist and exert effects on physiological and sociological behavior. A common example is jet lag. A person’s traveling in the east-west direction across time zones【C9】______his sleep cycles—it may take several days to return to the【C10】______cycle or to readjust to a new one.
A)indicates B)demonstrated C)verifying D)normal
E)considerable F)upsets G)disappoints H)periodic
I)Certainly J)Thankfully K)spans L)gorgeous
M)security N)exhibits O)limits
【C8】
选项
答案
B
解析
这里缺少谓语动词,根据空格前的have可判断时态是现在完成时。词库中只有demonstrated是过去分词形式,带入后表示“……证明了一个事实”。
转载请注明原文地址:https://kaotiyun.com/show/TCL7777K
0
大学英语六级
相关试题推荐
Oftenheardpeoplecomplainabout,whynotmyface,whysobadweathertoday,whydoIliveinsuchapoorfamily,whyGodtold
Oftenheardpeoplecomplainabout,whynotmyface,whysobadweathertoday,whydoIliveinsuchapoorfamily,whyGodtold
Exerciseisgoodforyou.Butmostpeoplereallyknowverylittleabouthowtoexercise.Lookatthefollowingtrue-falsetests.
ThinkorSwim:CanWeHoldBacktheOceans?A)Astheworldgetswarmer,sealevelsarerising.Ithasbeenhappeningatasnail’
ThinkorSwim:CanWeHoldBacktheOceans?A)Astheworldgetswarmer,sealevelsarerising.Ithasbeenhappeningatasnail’
ThinkorSwim:CanWeHoldBacktheOceans?A)Astheworldgetswarmer,sealevelsarerising.Ithasbeenhappeningatasnail’
"Theworld’senvironmentissurprisinglyhealthy.Discuss."Ifthatwereanexaminationtopic,moststudentswouldtearitapart
"Theworld’senvironmentissurprisinglyhealthy.Discuss."Ifthatwereanexaminationtopic,moststudentswouldtearitapart
"Theworld’senvironmentissurprisinglyhealthy.Discuss."Ifthatwereanexaminationtopic,moststudentswouldtearitapart
随机试题
A、monthB、MondayC、monsterD、moneyC
A.A型细胞B.B型细胞C.O型细胞D.A1型细胞E.A2型细胞哪种红细胞含H抗原最多
下列哪项不属于胃液的作用
群体决策的缺点有()。
有些儿童认为圆就是圆溜溜的东西,包括皮球、弹珠等,这是一种()
根据《中小学班主任工作规定》,下列哪一项不属于选聘班主任时应对教师进行的考查范畴?()
那是一个风雪()的傍晚,高原的寒流把一万支冰冷的横笛一起吹响,凄厉之声将耳膜刺得千疮百孔。
某公司用三台Web服务器维护相同的Web信息,并共享同一域名。在Windows的DNS服务器中通过——操作,可以确保域名解析并实现负载均衡。
在窗体上有一个文本框控件,名称为TextTime;一个计时器控件,名称为Timer1。要求每一秒在文本框中显示一次当前的时间。程序为:PrivateSubTimer1_TxtTime.text=TimeEndSub在下画线上应填入的内容是
There______ateacherandtwentystudentsintheclassroom.
最新回复
(
0
)