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
35
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] 【C5】
选项
A、feather
B、skin
C、fur
D、peel
答案
C
解析
语义衔接题。空所在句的下句中的its fur提示本空答案为[C]。
转载请注明原文地址:https://tihaiku.com/zcyy/3588610.html
相关试题推荐
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
随机试题
[originaltext]Iamnotonlyapainter,butastudentofart.Sometimes,[20]
[originaltext]M:IhopeyouwillspendNewYear’sEvewithus.W:I’dloveto,
某北方地区框剪结构病房楼,地上19层,地下2层,一般装修,其建安工程单方造价为3
A.11.12 B.10.12 C.9.12 D.8.12
A.乳糜微粒 B.三酰甘油 C.胆固醇 D.高密度脂蛋白(HDL) E.
以下关于不良反应的论述何者不正确:A.副作用是难以避免的 B.变态反应与药物剂
关于钩端螺旋体病的流行病学,下列哪项是错误的A.病后可获得较强的同型免疫力及异型
一退休教师,小腿青筋怒张、迂曲20余年,久站久行或劳累时青筋迂曲加重,伴下坠不适
下列情形,不可以推定经营者具有市场支配地位的是()。A、一个经营者在相关市场的市
派出所民警讯问公共汽车上的一桩盗窃案的嫌疑人甲、乙、丙、丁的笔录如下: 甲说:
最新回复
(
0
)