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
A Biological Clock Every living thing has what scientists call a biological clock that controls behavior. The biological cloc
A Biological Clock Every living thing has what scientists call a biological clock that controls behavior. The biological cloc
admin
2012-09-29
60
问题
A Biological Clock
Every living thing has what scientists call a biological clock that controls behavior. The biological clock(1)plants when to form flowers and when the flowers should open. It tells insects when to(2)the protective cocoon (防护卵袋) and fly away, and it tells animals and human beings when to eat, sleep and wake.
Events outside the plant and animals(3)the action of some biological clocks. Scientists recently found, for example, that a tiny animal changes the color of its fur because of the(4)of hours of daylight. In the short(5)of winter, its fur becomes white. The fur becomes gray brown in(6)in the longer hours of daylight in summer.
Inner signals control other(7)clocks. German scientists found that some kind of internal clock seems to order birds to begin their long migration(8)twice each year, Birds(9)from flying become restless when it is time for the trip,(10)they become calm again when the time of the flight has ended.
Scientists say they are beginning to learn which(11)of the brain contain biological clocks. An American researcher, Martin Moorhead, said a small group of cells near the front of the brain(12)to control the timing of some of our actions. These(13)tell a person when to wake, when to(14), and when to seek food. Scientists say there probably are other biological clock cells that(15)other body activities.
选项
A、physical
B、biological
C、mental
D、portable
答案
B
解析
解题思路:备选项中出现文章核心词时,往往可直接借助文章中心(生物钟)直接判断答案B。
转载请注明原文地址:https://kaotiyun.com/show/uGmd777K
本试题收录于:
职称英语卫生类B级题库职称英语分类
0
职称英语卫生类B级
职称英语
相关试题推荐
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Youwillhearfivepeoplegivingtheiropinionsonchanginginlife.Forquestions9-13,choosefromthelistA~Fwhateach
Youwillhearfiveconversationstakingplaceinrestaurantsandthecustomersarecomplainingaboutsomething.Beforeyoul
CONVERSATION2(Questions5-8)MESSAGEProblem:Therewasa【L5】______problem.Mr.Franks’companyha
IDCardForanewstudent,theIDcardwillbemailedtohis/hermailingaddressapproximately【L5】______workingdaysafterh
Davidenjoyswalkingbuthehasinjuredhiskneeandcannotclimbuphills.Hewouldliketospendacoupleofhoursonaquiet
Hehasmadeuphismindtogiveupsmoking.
(46).Studieshaveshownthatpregnantwomenwhodrinkcoffeearemorelikelythanotherwomentogivebirthtosmallbabies.Th
SeekHealthandWellness1Whetheryouarebusystudyingorstartingclerkship,itisabsolutelyessentialtomaintainhealthan
Hisshoeswereshinedtoperfection.
随机试题
抗洪救灾指挥部的编制属于()
进场施工机械设备性能及工作状态的控制主要包括()等。
某化工厂购置了一套泡沫灭火系统,其泡沫是从储罐底部注入,并通过软管浮升到液体燃料表面进行灭火的,那么这种泡沫灭火系统称为()。
某国债的面值为100元,票面利率为5%。起息是7月1日,交易日是12月1日,则已计息的天数是( )天。
以下哪项不属于金融市场的功能()。
柳园社区出现了几例父母虐待儿童的事件,在该社区产生了很大的影响。社会工作者方晨针对这一问题策划服务方案。他在家访的过程中r解到受虐儿童的家属缺乏社会支持,探明了产生这一现象的原因,并且通过调查掌握了受这一问题影响的社区人群状况,制定了下一阶段工作目标。方晨
企业进行薪酬管理的目的是()。
《中国诗词大会》唤醒了许多人对诗词的热爱,“盘活陈酿,创造珍酿”成为学者关注的话题。《中国诗词大会》目前是“盘活陈酿”,要“创造真酿”,符合时代的创作与具备真才实学的新鲜血液二者缺一不可。就诗词而言,现代创作要顺应社会发展的潮流,要深人生活,反映时代特色。
数据库物理设计阶段是根据数据库逻辑设计的结果设计合适的数据库物理结构。下列关于数据库物理设计的说法,错误的是()。
Forthispart,youareallowed30minutestowriteashortessayentitledTimeSpentonHousework.Youshouldwriteatleast150
最新回复
(
0
)