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】______ flower
Every living thing has what scientists call a biological clock that controls behavior. It tells plants when to 【C1】______ flower
admin
2010-12-04
68
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 can 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 biologicaI 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】______ call 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】______ .
【C14】
选项
A、why
B、how
C、when
D、where
答案
B
解析
疑问副词辨析题。根据下文可知.如果我们经常更换工作时间,我们的身体会不适应。这正是生物钟影响我们工作的体现,所以B正确。
转载请注明原文地址:https://kaotiyun.com/show/3es7777K
0
大学英语六级
相关试题推荐
Ifyouweretobeginanewjobtomorrow,youwouldbringwithyousomebasicstrengthsandweaknesses.Successor【C1】______iny
EverypeoplehasitsownspecialwordsandexpressionsliketheAmericanexpression"onthewagon".Itmeansapersonwhonolon
A、Wecan’tjudgebuildingsbytheancientstandards.B、Wecan’tjudgeallthebuildingsbytheancientstandards.C、Wecan’tjud
A、Angry.B、Hungry.C、Tired.D、Dissatisfied.C关键词汇:I’mbeat;表示该男士听从了建议,准备睡觉了。因此对应态度应为tired。
Directions:Forthispart,youareallowed30minutestowriteacompositiononthetopic"ProblemsaboutReducingStudents’Hea
A、Eliminatingtheoriginalvegetationfromthebuildingsite.B、Markingthehousesinanareasimilartooneanother.C、Deciding
A、Itisquitegeneral.B、Mostoftheinformationheneedswillbefoundinnewspapers,C、Shethinksheshouldchangeit.D、Itsh
A、Decideforhimselfwhatisbest.B、Communicatehiscareerhopes.C、Stophinderinghisownprogress.D、Lookforanothercareer.
A、Thedramawasn’tinterestingatall.B、Hiswatchisexpensive.C、Hehadanotherappointmentlastnight.D、Thewomanshouldhav
Ironically,intheUnitedStates,acountryofimmigrants,prejudiceanddiscriminationcontinuetobeseriousproblems.Therew
随机试题
最容易受到国家法律禁止的兼并行为是()
下列有关硫色素反应叙述正确的是
试带法测定尿糖,主要检出尿中的
引起呼吸困难的病因不正确的是
开发商总是希望延迟付款并降低付款的数额,承包商总是希望尽早获得付款。()
厂站工程施工中,采用人工井降水时,降水井的布置,可在( )方向适当加密,排泄方向适当减少。
在闸坝基础人工开挖过程中,临近设计高程时,保护层暂不开挖的范围是()m。
下列各项属于按索赔处理方式分类的是()。
对于长度为n的线性表,在最坏情况下,下列各排序法所对应的比较次数中正确的是()。
A、Thewoman’scompanyfailedtomakepaymentsintime.B、Theadspecificationshadnotbeengivenindetail.C、Thewoman’scompa
最新回复
(
0
)