首页
登录
职称英语
Every living thing has what scientists call a biological clock that control
Every living thing has what scientists call a biological clock that control
游客
2023-09-08
71
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 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】______ . [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/2995894.html
相关试题推荐
Scientistshavedevelopedacomputerisedmind-readingtechniquewhichlets
Scientistshavedevelopedacomputerisedmind-readingtechniquewhichlets
Scientistshavedevelopedacomputerisedmind-readingtechniquewhichlets
Biologically,thereisonlyonequalitywhichdistinguishesusfromanimals
Biologically,thereisonlyonequalitywhichdistinguishesusfromanimals
Itisprettywellunderstood___________________(什么控制着二氧化碳的流通).whatcontrolsth
Scientistshavecomeupwithatheoryforwhytimeflieswhenyouarehavin
Scientistshavecomeupwithatheoryforwhytimeflieswhenyouarehavin
Scientistshavecomeupwithatheoryforwhytimeflieswhenyouarehavin
Scientistshavecomeupwithatheoryforwhytimeflieswhenyouarehavin
随机试题
OnedaysomeofBaker’sfriendssaw______inhisgarden.[br]WhatdidBakerdo
Thisisaverybighotelanditcan______morethan1,000people.(2011年南京师范大学考博试
[originaltext]W:So,whatcanIdoforyoutoday?M:Well,urn,[6]nextmonthi
Theguardapproachedthehousecautiouslywhenhesawtheviciousdigatthedoo
过去一百年里,位于北京市中心的紫禁城大多时候是庄严肃穆的空寂之地,与周边的熙熙攘攘形成鲜明的对比。【T1】中国末代皇帝退位后,故宫(theImperi
[audioFiles]audio_eufm_j01_267(200910)[/audioFiles]A、Shesuggeststhattheman
某酯水解生成甲和乙两种物质.同温同压下,相同质量的甲和乙的蒸气占有相同的体积,该
平屋面上设置架空隔热层的构造要求,错误的是哪一项?( )A.架空隔热层的高度宜
患者,女性,30岁。孕2产1,孕30周时行产前检查,B超示胎儿发育未见异常,腹部
高压电力电缆需停电的工作,应填用()工作票。第一种$;$第二种$;$事故紧急抢修
最新回复
(
0
)