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 clo
A Biological Clock Every living thing has what scientists call a biological clock that controls behavior. The biological clo
admin
2015-07-06
22
问题
A Biological Clock
Every living thing has what scientists call a biological clock that controls behavior. The biological clock tells【C1】______when to form flowers and when the flowers should open. It tells【C2】______when to leave the protective cocoons and fly away, and it tells animals and human beings when to eat, sleep and wake.
Events outside the plant and anima【C3】______the actions of some biological clocks. Scientists recently found, for example, that a tiny animal changes the color of its fur【C4】______ the number of hours of daylight. In the short【C5】______of winter, its fur becomes white. The fur becomes gray brown in color in the longer hours of daylight in summer.
Inner signals control other biological clocks. German scientists found that some kind of internal clock seems to order birds to begin their long migration【C6】______twice each year. Birds【C7】______flying become restless when it is time for the trip,【C8】______they become calm again when the time of the flight has ended.
Scientists say they are beginning to learn which【C9】______of the brain contain biological clocks. An American researcher, Martin Moorhead, said a small group of cells near the front of the brain【C10】______to control the timing of some of our actions. These【C11】______tell a person when to【C12】______, when to sleep and when to seek food. Scientists say there probably are other biological clock cells that control other body activities.
Dr. Moorhead is studying【C13】______our biological clocks affect the way we do our work. For example, most of us have great difficulty if we must often change to different work hours.
【C14】______can take many days for a human body to accept the major change in work hours. Dr. Moorhead said industrial officials should have a better understanding of biological clocks and how they affect workers. He said【C15】______understanding could cut sickness and accidents at work and would help increase a factory’s production.
【C4】
选项
A、because
B、for the reason that
C、because of
D、since
答案
C
解析
这里应使用介词短语,因为其后是名词。because和since都有“因为”的意思,但它们都是连词,用来引导原因状语从句,for the reason that后接句子,所以也不是答案。
转载请注明原文地址:https://jikaoti.com/ti/OqOsFFFM
本试题收录于:
职称英语卫生类A级题库职称英语分类
0
职称英语卫生类A级
职称英语
相关试题推荐
TheRiverWensumflowsbyNorwich.PeoplehavelivedbytheRiverWensumforatleast2,000years.
1Americansthisyearwillswallow15,000tonsofaspirin,oneofthesafestandmosteffectivedrugsinventedbyman.Themost
ManyWomenWhoBeatCancerDon’tChangeHabitsManywomenwhobattlebreastcancerwilltellyouit’salife-changingexperience
ResearchShowsWalkingCanLiftDepressionNewresearchbyGermanscientistsshowsthatauthorCharlesDickenswasontoagoodt
SomeSundaynewspapersmaybelongtothesamepublishingcompanybutarenoteditedbythesamegroupofpeople.Themostsucce
Itwasaquestionofmakingsurethatcertainneedswereaddressed,notablyinthepensionsarea.
Extremelyrefinedbehavior,however,cultivatedasanartofgraciousliving,hasbeencharacteristiconlyofsocietieswithwea
Asmoreandmorematerialfromotherculturesbecameavailable,Europeanscholarscametorecognizeevengreatercomplexityinm
Therearealtogether13dragstreatingsleepdisordersintheUnitedStates.FDAconsidersittheproducers’dutytowaretheu
TheseartistshavegivenusspecialandpricelessgiftstotheculturallifeintheUnitedStates.
随机试题
Whatisaninternationalturnkeyproject?
纵隔肿瘤压迫气管咳嗽特征为喉癌和喉返神经麻痹咳嗽特征为
坐标法放样目前主要采用的仪器是()。
企业从证券市场上取得以公允价值计量且其变动记入当期损益的金融资产时支付的交易费用,应记入的会计科目是()。
持有过量现金可能导致的不利后果是()。
商业银行最主要的负债业务是()。
你制订的工作方案出了很大漏洞。但是已经浪费了很多人力财力。你怎么办?
(1)"Pleasepasstheturkeyanddressing."Whatdoesthissimplerequestmakeyouthinkabout?IfyouareanAmerican,youthink
A、Bylistingwomen’sresponsestodifferentparties.B、Bydiscussingwomen’svotingrightsindemocracies.C、Byquotingtheperc
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.Hehopesthepublicwilllistenandunderstand—hewant
最新回复
(
0
)