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
2010-11-02
61
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】______ .
【C20】
选项
A、product
B、production
C、productivity
D、producer
答案
B
解析
同根词辨析题。根据语意,这种对生物钟的了解有利于减少工作中突发的疾病和事故,并且有利于提高产量。因此production为正确选项。
转载请注明原文地址:https://kaotiyun.com/show/WLs7777K
0
大学英语六级
相关试题推荐
A、Itindicatesthatlatecomersdon’tcareaboutothers’time.B、Itindicatesthatlatecomersalwaysignoreotherpeople’sfeelin
Healwaysaccusedhimself,sincehebelieved____________(他让妻子和孩子吃了很多苦头).
PassageOneAliceWalkermakesherlivingbywriting,andherpoems,shortstories,andnovelshavewonmanyawardsandfell
PassageOneAliceWalkermakesherlivingbywriting,andherpoems,shortstories,andnovelshavewonmanyawardsandfell
Menseemtohavealwaystakenaninterestinmeteorites,butnotuntiltheearlynineteenthcenturyweretheseobjectsconsidere
Noiseentersourearsaspowerfulwavesofmechanicalenergy.Scientistsmeasuresoundintensityindecibels(db),witheachdou
Noiseentersourearsaspowerfulwavesofmechanicalenergy.Scientistsmeasuresoundintensityindecibels(db),witheachdou
Iamoneofthemanycitypeoplewhoarealwayssayingthatgiventhechoicewewouldprefertoliveinthecountryawayfromth
Intheatmosphere,carbondioxideactsratherlikeaonewaymirror—theglassintheroofofagreenhousewhichallowsthesun’s
Intheatmosphere,carbondioxideactsratherlikeaone-waymirror—theglassintheroofofagreenhousewhichallowsthesun’s
随机试题
(2012年4月)组织设定的战略目标必须满足的基本要求包括_____、_____、______。
冷凝器的作用是提供()产品及保证有适宜的液相回流。
下列清偿种类归纳不正确的一组是()
A.麻黄杏仁薏苡甘草汤B.麻黄附子细辛汤C.麻黄附子甘草汤D.麻黄加术汤少阴病,始得之,反发热,脉沉者宜
患者自汗,多尿,滑精,是因气的何种作用失常所致
孕激素的生理作用下述何项是正确的
根据《建设工程工程量清单计价规范》GB50500,装饰装修工程中按设计图尺寸以面积计算工程量的有()。【2010年真题】
土地使用权出让,必须符合( )的条件。
公开发行股票的成本有哪些?
编译和解释是实现高级程序设计语言的两种基本方式,________是这两种方式的主要区别。
最新回复
(
0
)