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
Every living thing has what scientists call a biological clock that controls behavior. It tells plants when to【C1】______ flowers
Every living thing has what scientists call a biological clock that controls behavior. It tells plants when to【C1】______ flowers
admin
2010-10-28
55
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】______ .
【C19】
选项
A、decrease
B、diminish
C、decline
D、reduce
答案
D
解析
动词辨义 。根据语意推断这句话的意思是:对生物钟的了解能够减少在工作中突发的疾病和事故。可见,这里的“减少”是人为造成的疾病和事故数量上韵下降,reduce指人为地使某物在数量或重量方面的减少或降低,因此选择D项。
转载请注明原文地址:https://kaotiyun.com/show/brz7777K
0
大学英语六级
相关试题推荐
Althoughthefactthattodayvirusesareknownto【S1】______causecancerinanimalsandincertainplants,tha
Althoughthefactthattodayvirusesareknownto【S1】______causecancerinanimalsandincertainplants,tha
Althoughthefactthattodayvirusesareknownto【S1】______causecancerinanimalsandincertainplants,tha
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganaspirintabletoreatingachickensandwich--theycana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganaspirintabletoreatingachickensandwich--theycana
Weallscreamforwaterwhenthirsty,butdoyouknowinveryhot,dryweather,plantsalsomake【B1】______soundsasiftheya
Weallscreamforwaterwhenthirsty,butdoyouknowinveryhot,dryweather,plantsalsomake【B1】______soundsasiftheya
Weallscreamforwaterwhenthirsty,butdoyouknowinveryhot,dryweather,plantsalsomake【B1】______soundsasiftheya
Weallscreamforwaterwhenthirsty,butdoyouknowinveryhot,dryweather,plantsalsomake【B1】______soundsasiftheya
随机试题
下列对于数字媒体的分类,正确的是_________。
《素问.至真要大论》认为,“诸痛痒疮”者,病属于
以下关于债权人行使撤销权的具体条件的说法不正确的是()。
下列对期货从业人员暂停其期货从业人员资格的处罚适用正确的是()。
货币需求作为一种经济需求,是由()共同决定。
阅读下面这首词,回答问题。破阵子.为陈同甫赋壮词以寄之(宋)辛弃疾醉里挑灯看剑,梦回吹角连营。八百里分麾下炙,五十弦翻塞外声,沙场秋点兵。马作的卢飞快,弓如霹雳弦惊。了却君王天下事,赢得生前身后名。可怜白发生!
根据《中华人民共和国教师法》的规定,学校应对教师考核的内容有()。
2008年北京奥运会,我国在多个体育项目上都取得了历史性的突破。以下体育项目中,属于我国在奥运史上首次获得金牌的有()。
下列成语与人物对应不正确的是:
A.aimB.argueC.reducingD.becauseE.reflectsF.strengthG.seekingH.availableI.respondJ.complyK.readL.l
最新回复
(
0
)