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
44
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】______ .
【C10】
选项
A、ruthless
B、annoyed
C、restless
D、anxious
答案
C
解析
形容词辨析题。通过下文我们得知。they become calm again when the time of the flight has ended,当鸟类迁徙结束后,它们又恢复了平静。因此可以判断,当迁徙时问已到,而又被阻止不能迁徙的鸟类应有的状态是“不平静的”(calm的反义词)。restless表示“不平静的,不安宁的”,所以选择C。
转载请注明原文地址:https://kaotiyun.com/show/jLs7777K
0
大学英语六级
相关试题推荐
PassageOneAliceWalkermakesherlivingbywriting,andherpoems,shortstories,andnovelshavewonmanyawardsandfell
Menseemtohavealwaystakenaninterestinmeteorites,butnotuntiltheearlynineteenthcenturyweretheseobjectsconsidere
Noiseentersourearsaspowerfulwavesofmechanicalenergy.Scientistsmeasuresoundintensityindecibels(db),witheachdou
Noiseentersourearsaspowerfulwavesofmechanicalenergy.Scientistsmeasuresoundintensityindecibels(db),witheachdou
Noiseentersourearsaspowerfulwavesofmechanicalenergy.Scientistsmeasuresoundintensityindecibels(db),witheachdou
GMOrganismsByfarthemostcommongeneticallymodified(GM)organismsarecropplants.Butthetechnologyhasnowbeenapp
Agoodwaytogetinformationforessaysandreportsistointerviewpeoplewhoarcexpertsinyour【S1】______topicorwho
Agoodwaytogetinformationforessaysandreportsistointerviewpeoplewhoarcexpertsinyour【S1】______topicorwho
A、Heusedtobeaworkmanhimself.B、Helikestodothingshimself.C、Heisprofessionalbuilder.D、Hepaidworkmentodecorate
Iamoneofthemanycitypeoplewhoarealwayssayingthatgiventhechoicewewouldprefertoliveinthecountryawayfromth
随机试题
下列关节中,具有囊内韧带的是()
《素问.生气通天论》所说“味过于甘”则()
以下是慢性腹泻的病理生理类型,除了
某宗房地产已使用了7年,现土地价值为25万元,建筑物重置价格为35万元,房地每年纯收益为6万元,土地资本化率为8%,建筑物资本化率为10%,则该宗房地产价值为()。
某大直径桩采用钻芯法检测时,在桩身共钻有两孔,在某深度发现有缺陷现象,桩基检测人员在两个钻孔相同深度各采取了3块混凝土芯样试件,得到该深度处的两个抗压强度代表值,则该桩在该深度的芯样试件抗压强度代表值由下列哪种方法确定?()
目前,主要环境价值评估方法大致可划分为()等类型。
舒乐舍板的表面可以喷涂各种涂料、粘贴瓷砖等装饰块材,具有()等良好的综合性能。
自然人投资者应当全面评估自身的(),审慎决定是否参与金融期货交易。
国务院办公厅关于公开发布天气预报有关问题的××中国气象局:你中国气象局《关于加强发布公众天气预报归口管理的报告》(国气发[2013]13号)收悉。经国务院同意,现将有关问题函复如下:一、为保证向社会公开发布天气预报和灾害性天气警报的准确性,更好地为
夏天从冰箱里取出一瓶啤酒.发现啤酒外面“出汗”,对这种现象正确的解释是()。
最新回复
(
0
)