首页
登录
职称英语
Every living thing has what scientists call a biological clock that controls
Every living thing has what scientists call a biological clock that controls
游客
2023-08-28
48
管理
问题
Every living thing has what scientists call a biological clock that controls behavior. It tells plants when to【C1】______flowers and insects when to leave the protective cocoon(茧)and fly away. And it tells animals and human beings when to【C2】______, sleep and seek food. It controls our body temperatures, the【C3】______of some hormones and even dreams.
Events【C4】______the plant and animal affect its actions. Scientists recently found that a tiny animal called Siberain hamster changes the color of its【C5】______because of the number of hours of【C6】______. In shorter days of winter its fur becomes white. The fur becomes gray-brown in longer【C7】______of daylight summer.
【C8】______signals control other biological clocks. German scientists found that some internal one seems to order birds to begin their【C9】______flights two times each year. Birds prevented from flying become【C10】______when it is time for the trip. 【C11】______they become calm again when the time of the flight has ended. A mix of outside and internal events controls some biological clocks; such things as heartbeat and the daily change from sleep to walking take place because of both external and internal signals.
Scientists are beginning to learn【C12】______parts of the brain contain biological clocks. A researcher at Harvard University, Dr. Martin Moore Ede, said a small group of cells near the front of the brain seemed to control the【C13】______of some of our actions. Probably there are other cells to control other body activities. He is studying【C14】______they affect the way we do our work. Most of us have great difficulty if we【C15】______often change to different work hours. It can【C16】______many days for a human body to【C17】______the major change in work hours. Industrial officials should have a better【C18】______of biological clocks and how they affect workers. He said such an understanding could【C19】______sickness and accidents at work, and would help increase【C20】______. [br] 【C13】
选项
A、step
B、rhythm
C、motion
D、timing
答案
D
解析
语义衔接题。首段提到生物钟的作用:It tells…when to…it tells animals and human beings when…and even dreams,可见大脑中的一些细胞是能控制某些行为的时间选择的,[D]timing表示时间的选择和安排,符合语义,故答案为[D]。
转载请注明原文地址:https://tihaiku.com/zcyy/2965500.html
相关试题推荐
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
[originaltext]Scientistshaveobservedthatplantsthemselvesproducemany
[originaltext]Scientistshaveobservedthatplantsthemselvesproducemany
[originaltext]Scientistshaveobservedthatplantsthemselvesproducemany
Twogroupsofscientistsdemonstratedlastweekforthefirsttimethatthe
Twogroupsofscientistsdemonstratedlastweekforthefirsttimethatthe
随机试题
Thereisa______intheupperleftcorneroftheAustralianationalflag.A、kangar
[originaltext]W:YouhadmetProfessorJohnsonbefore,right?Howwouldyoudes
[originaltext]W:WhatdoyouthinkofJanesproposalonthemeeting?M:Um,i
【S1】[br]【S14】A、whichB、whatC、howD、thatD考查同位语从句。同73题一样,由名词suspicion后的完整句子判断,
[originaltext]Howcanaspeakersuccessfullyholdanaudience’sattentiond
Overthelasttwoyears,inthePCbusinessMichaelDellhasbeenbeatenlik
A.突发恶心呕吐,呕吐物最初为咖啡渣样物,后为暗红色血液,伴黑便 B.突发右上
王女士,28岁,未产妇,平素月经规律,28天一次,每次持续3~4天。其末次月经是
理气药对胃肠运动的作用是A.松弛胃肠平滑肌B.收缩胃肠平滑肌C.调节胃肠平滑肌D
脓血便多见于()A.阿米巴痢疾B.急性胃肠炎C.霍乱D.急性细菌性痢疾E.上消
最新回复
(
0
)