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
3
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] 【C7】
选项
A、days
B、lights
C、times
D、hours
答案
D
解析
逻辑衔接题。通过上下文,我们知道是日光照射的小时数影响了该动物皮毛颜色的变化。因此,选择D。
转载请注明原文地址:https://tihaiku.com/zcyy/3612165.html
相关试题推荐
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
随机试题
Therateatwhichsoilcanabsorbwater(i)_______withcontinuouswetting,sot
2019年3月,甲单位收到以财政授权支付方式拨付的“M实验室建设”项目经费500
施工平面图的合理绘制有重要的意义。其绘制比例一般为()。A.1:300~1:5
不属于肠内营养禁忌证的是()。A.胃部分切除患者 B.急性胰腺炎的急性
A.假性近视 B.屈光指数性近视 C.曲率性近视 D.单纯性近视 E.轴
两化深度融合已经成为我国工业经济转型和发展的重要举措之一。对两化融合的含义理解正
温经汤的组成药物中不含有的是A.牡丹皮、麦冬 B.人参、阿胶 C.干姜、肉桂
在膜剂的制备方法中,需要在热融状态下加入药粉的方法是A.都不是 B.延压制膜法
某男,59岁。半年来,腰酸膝软、盗汗遗精。神疲口燥。证属真阴不足,宜选用的成药是
下列防腐蚀涂装前的表面处理中,属于机械处理的是().A.喷砂处理 B.喷
最新回复
(
0
)