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
2024-05-30
25
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
形容词辨析题。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,当迁徙时问已到,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。
转载请注明原文地址:https://tihaiku.com/zcyy/3612168.html
相关试题推荐
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
随机试题
Injuniorhighschool,oneofmyclassmateshadaTVaddiction—backbeforei
In1997,devoteesofhomeelectronicseagerlyawaitedtheDVDplayer,anew
【B1】[br]【B7】[originaltext]PerchedamongthehighlandsofwesternCameroon
如果咨询师觉得自己难以处理移情可以()A.断然拒绝继续咨询 B.向求助者的亲属
目前,我国托管资产的场内资产结算主要采用两种模式,包括()和()。 A
幼儿圆圆有一头漂亮的长发,经常在上课时玩头发,不按照教师刘某的要求进行活动,多次
城市轨道交通线网规划的主要任务是研究确定城市轨道交通发展目标和()。A.发
“接案”是社会工作者与潜在服务对象开始接触,了解其需要,帮助其逐渐成为服务对象并
以下哪项不是溶栓治疗成功反映冠脉再通的标指A.出现加速性室性自主心律 B.血清
常用的给水处理工艺有()。A、过滤 B、浓缩 C、消毒 D、软化
最新回复
(
0
)