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
15
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://www.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
[originaltext]M:Goodmorning.WillyoubookaplanetickettoLondonforme?
关于流动资产投资策略,下列说法中正确的有()。A.在紧缩的流动资产投资策略下,企
采用价值工程提高建设工程经济效果的关键环节为()。A:施工阶段 B:实施阶段
CBR试验如果制备3种干密度试件,试件每层击实次数分别为()。A.30次 B
易发生胃排空障碍的是A.毕Ⅱ式胃大部切除术 B.迷走神经干切除 C.选择性胃
下列属于危险性控制的措施是()A.限制能量 B.防止能量散逸 C.防止人为
小郑是一名社会工作专业的学生,在一次课堂情境模拟中,作为社会工作者的他对案主的衣
AIDS患者的心理状态主要表现包括( )。A.抑郁状态 B.绝望 C.
保管期满但未结清的债权、债务原始凭证,经单位负责人批准后方可销毁。
根据《基本建设项目建设成本管理规定》,建设项目的建设成本包括()A.为项目配
最新回复
(
0
)