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
2024-06-01
29
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] 【C10】
选项
A、ruthless
B、annoyed
C、restless
D、anxious
答案
C
解析
形容词辨义 。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,当迁徙时间已到,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项。
转载请注明原文地址:https://tihaiku.com/zcyy/3614357.html
相关试题推荐
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganasp
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganasp
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganasp
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganasp
[audioFiles]audio_eusm_0109(20106)[/audioFiles]A、Fireprevent.B、Pestcontrol.
Tounderstandtheimportanceofcontrolledobservationinpsychology,weloo
Tounderstandtheimportanceofcontrolledobservationinpsychology,weloo
BiologicalMimicryTheInventionofVelcro
BiologicalMimicryTheInventionofVelcro
BiologicalMimicryTheInventionofVelcro
随机试题
甲在外经商多年返回家乡,看村小学校舍破旧,就跟村委会签订赠与合同,捐款100万元
泽泻的药用部位为A.根茎 B.根及根茎 C.块根 D.块茎 E.根
下列公式中,正确的是()。A.资本金利润率=平均利税总额÷资本金×100%
制备滴丸中,错误的操作是A.主药溶解在加热熔融的基质中 B.主药混悬在加热熔融
将300克浓度95%的酒精与若干浓度60%的酒精,混合成浓度75%的酒精,需要浓
下列属于城市紫线的是()。(2017年真题)A.历史文化街区中文物保护单位
下列行为不构成违法行为的是()。A.以自制人民币换取真币 B.出售自制人民
(2018年真题)下列各项中,不应计入应付股利的有()。A.董事会通过的利润分
基层施工时,铺筑材料工地实测干密度与最大干密度之比称为()。A.厚度系数
关于干性坏疽的描述,不正确的是A.与周围组织分界清楚 B.常呈黑褐色 C.常
最新回复
(
0
)