首页
登录
职称英语
Every living thing has what scientists call a biological clock that controls
Every living thing has what scientists call a biological clock that controls
游客
2023-09-07
27
管理
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】______ . [br] 【C2】
选项
A、walk
B、cry
C、guard
D、awaken
答案
D
解析
语义衔接题。结合空格后的并列动词sleep and seek food,此题可用排除法。生物钟可以告诉人和动物什么时候醒来(awaken),什么时候入睡.以及什么时候寻找食物。
转载请注明原文地址:https://tihaiku.com/zcyy/2993661.html
相关试题推荐
[originaltext]M:Youlikelivinginthecity,don’tyou?W:Oh,Iloveit.It’s
[originaltext]M:Youlikelivinginthecity,don’tyou?W:Oh,Iloveit.It’s
[originaltext]Scientistssaysharkshavelivedintheworld’soceansformi
[originaltext]Scientistssaysharkshavelivedintheworld’soceansformi
ClimateChangeScientistspredictincreasi
ClimateChangeScientistspredictincreasi
ClimateChangeScientistspredictincreasi
ClimateChangeScientistspredictincreasi
ClimateChangeScientistspredictincreasi
[originaltext]W:Whatdoyoudoforaliving,Frank?M:Iamanaerospaceengin
随机试题
Thediscoveryofthegoldinthewest______theexplorationandsettlementofC
Foundermutationsareaclassofdisease-causinggeneticmutations,eachder
Throughouthistorythebasicunitofalmosteveryhumansocietyhasbeenthe
[originaltext]ManyorganizationsaroundtheUnitedStatesholdcannedfood
到2020年,旅游市场总规模达到67亿人次,旅游投资总额2万亿元,旅游总收入达到
一位慢性病经常住院患者在静脉输液时提出由护士长来为其输液,因为担心新护士的操作水
药材调配前对处方再次进行审查的内容不包括A:处方中有无配伍禁忌药B:处方中有无
下列关于行政主体的表述中正确的一项是:A、行政主体是指行政机关 B、行政主体是
下列货物,适用13%增值税税率的有()。A、利用工业余热生产的热水 B、石油
2009年年底,我国某地区进行网民上网方式调查,结果显示,当地网民规模约有380
最新回复
(
0
)