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
14
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
采用内表面光滑的非金属风管进行机械排烟时,现行国家标准规定的最高排烟风速为下列哪
某企业食堂有多个档口供员工选择餐食,员工使用现金进行支付。为了更方便员工就餐,现
根据《软件文档管理指南GB/T16680-1996》,关于软件文档的归档工作,
混凝土面板堆石填筑结束后,应检查各种石料()。A.风化程度 B.级配情况
区别绒毛膜癌与侵蚀性葡萄胎最主要的依据是A.有无转移病灶 B.距葡萄胎排空后时
(2019年真题)2008年国际金融危机前,英国“三头监管体制”中,负责对金融机
下列各项中,属于金融期货性质的有()。 Ⅰ.买卖双方的权利与义务是对称的
与2006年7月相比,2007年同期哪个港口货运吞吐量的同比增长率与沿海港口
阅读下面材料.根据要求写作文。 一位国王总觉得自己不幸福,就派人四处去找一个感
关于PCI考评,说法正确的有()。A.通过整体核算的形式进行 B.适用于
最新回复
(
0
)