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
2023-09-09
48
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/2998091.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
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganasp
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganasp
[audioFiles]audio_eusm_0109(20106)[/audioFiles]A、Fireprevent.B、Pestcontrol.
Tounderstandtheimportanceofcontrolledobservationinpsychology,weloo
Tounderstandtheimportanceofcontrolledobservationinpsychology,weloo
Tounderstandtheimportanceofcontrolledobservationinpsychology,weloo
随机试题
Allpartsofthehouse______thewindowswereingoodcondition.A、otherthanB、r
Lazinessisasin,everyoneknowsthat.Wehaveprobablyallhad1.______le
Notonly______(他看过这部影片),buthemetandtalkedwiththedirectoraswell.didhe
为了改进应用软的可靠性和可维护性,为了适应未来的软硬件环境的变化而进行的行为属于
银行的个人贷款的客户年龄应当在()。A.16~65周岁 B.16~60周
温女士被确诊为子宫内膜异位症,下列可以用来治疗的有效方法是A.宫腔镜 B.腹腔
暴力作用头部后,脑组织受到破坏较轻,软脑膜尚完整。判断为()。A.脑震荡 B.
邀请招标,是指招标人以()的方式直接邀请特定的潜在投标人参加投标。A、招标要约书
金融理财的几种计算工具各有其特点,下列描述正确的有()。A.专业理财软件:优
SWOT分析工具分析中的四个方面包括()。A:优势 B:战略 C:劣势 D
最新回复
(
0
)