首页
登录
职称英语
Every living thing has what scientists call a biological clock that control
Every living thing has what scientists call a biological clock that control
游客
2023-09-09
12
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 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 Siberian 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 in 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 the 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.【C16】______ can take many days for a human body to【C17】______ a 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] 【C9】
选项
A、migration
B、immigration
C、emigration
D、transportation
答案
A
解析
名词辨义 。通过下文when it is time for the trip 得知,鸟类开始的这次飞行应该是“迁徙”。 migration“移民,移动”,泛指从一个地方到另一个地方定居,不一定是国家和国家之间,因此选择A项。
转载请注明原文地址:https://tihaiku.com/zcyy/2998090.html
相关试题推荐
[originaltext]W:Whatdoyoudoforaliving,Frank?M:Iamanaerospaceengin
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowingana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowingana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowingana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowingana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowingana
Scientistswillhaveto______(提出增加世界粮食供应的新方法).comeupwithnewmethodsofinc
Everyonelivinginthissocietyshouldcommunicatewitheachother.Theyge
Everyonelivinginthissocietyshouldcommunicatewitheachother.Theyge
Everyonelivinginthissocietyshouldcommunicatewitheachother.Theyge
随机试题
PrinciplesinJapaneseOrganizationsDuringthe19
[originaltext]W:Excuseme.I’manewstudent.WhatamIsupposedtodo?M:We
适用于长距离、大直径以及高耸构筑物控制测量的平面坐标的传递、同心度找正测量的常用
从所给四个选项中,选择最合适的一个填入问号处,使之呈现一定规律性: A
( )是指通过基金公司或基金公司网站进行基金买卖,因此只销售一家基金公司的产品
()采用估值技术确定公允价值,在估值技术难以可靠计量公允价值的情况下按成
Hundredsofbuildingswerewreckedbyth
在路线价法中,不做交易情况修正和交易日期修正的原因有()。A.求得的路线价
(2015年真题)下列不动产登记类型中,不属于本登记的()。A.更正登记 B
下列关于中枢兴奋传播特征的描述,正确的是A.双向传布 B.对内环境变化敏感
最新回复
(
0
)