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
86
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、days
B、months
C、minutes
D、weeks
答案
A
解析
解题思路:备选项是否有关系(词义上相关),注意借助空格处的搭配结构“在冬季里短的……里”判断答案A正确。
转载请注明原文地址:https://kaotiyun.com/show/gGmd777K
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
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Lookatthequestionsforthispart.Youwillhearapassageabout"LivingaLongLife".Youwilllistentoittwice.F
Lookatthequestionsforthispart.Youwillhearapassageabout"LivingaLongLife".Youwilllistentoittwice.F
Youwillheartwotelephoneconversations.Writedownonewordornumberineachofthenumberedspacesontheformsbelow.
Youwillheartwotelephoneconversations.Writedownonewordornumberineachofthenumberedspacesontheformsbelow.
A.Morrison’sSurveyandFindingsB.CommentsonCurrentGuidelinesC.TheRelationofSexuallyTransmittedDiseasestoIUDComp
(46).Studieshaveshownthatpregnantwomenwhodrinkcoffeearemorelikelythanotherwomentogivebirthtosmallbabies.Th
(46).Studieshaveshownthatpregnantwomenwhodrinkcoffeearemorelikelythanotherwomentogivebirthtosmallbabies.Th
随机试题
慢性阻塞性肺气肿患者出现肺性脑病前最主要的临床表现是()。
在立式铣床上用端铣法铣削矩形工件垂直面时,若机用虎钳的固定钳口与工作台台面不(),则可能产生垂直度不好。
以出让方式取得土地使用权进行房地产开发的,超过出让合同约定的动工开发日期满一年未动工开发的,可以征收相当于土地使用权出让金_______以下的土地闲置费。()
ThepeopleatthepartywerewordedaboutJanebecausenoonewasaware______shehadgone.
下列哪项不是哮证发作的先兆主证
患者,男性,27岁,劳累时心悸,胸骨后疼痛1年。查体可闻及主动脉瓣区收缩期粗糙的喷射性杂音,主动脉瓣区第二心音减弱。X线检查示:左室扩大和升主动脉扩张。可能的诊断是
甲厂生产一种易拉罐碳酸饮料。消费者丙从乙商场购买这种饮料后,在开启时被罐内强气流炸伤眼部,下列答案巾哪项足正确的?()
根据下述材料,回答下列题目:大连商品交易所的大豆期货保证金比率为5%,郭女士以3200元/吨的价格买入8张大豆期货合约,每张10吨。此时,郭女士保证金账户的余额为( )元。
ThoughConfuciushaslonggone,hispowerfulideasundoubtedly______Chinesesocietyandtradition.
Forthispart,youareallowed30minutestowriteashortessayentitledBeaCivic-mindedTourist.Youshouldincludeinyour
最新回复
(
0
)