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
2024-05-07
32
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 the 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 Siberain 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 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 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. It can【C16】______many days for a human body to【C17】______the 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] 【C7】
选项
A、hours
B、lights
C、days
D、times
答案
A
解析
语义衔接题。本段第二句末的hours提示本空答案为[A]。
转载请注明原文地址:https://tihaiku.com/zcyy/3588612.html
相关试题推荐
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
随机试题
OnthisobservanceofWorldMalariaDay,Icallonallpartnerstoincreaseinve
信息系统受到破坏后,会对社会秩序和公共利益造成特别严重损害,或者对国家安全造成严
鼻咽纤维血管瘤起源于:A.枕骨底部骨膜 B.鼻咽部黏膜 C.翼突内侧骨膜
各种化学致癌物中致癌谱广、致癌力强的是A.芳香胺类 B.真菌毒素 C.氨基偶
下列有关全面预算管理与战略管理的说法中,正确的有( )。A.全面预算管理是企业战
幼儿期应每隔几个月进行一次体格检查()A.6~9个月 B.1年 C
根据《烈士褒扬条例》,烈士遗属属于《工伤保险条例》以及相关规定适用范围的,在享受
国别风险应当至少划分为()个等级。A.三 B.四 C.五 D.六
疖热毒蕴结证,常用治法是A.清热解毒 B.疏肝理气 C.清热利湿,解毒透脓
胸椎骨折脱位伴脊髓损伤患者,双下肢出现不全瘫,查体:侧卧位能屈髋,仰侧卧位不能屈
最新回复
(
0
)