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
2024-05-03
5
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] 【C13】
选项
A、step
B、rhythm
C、motion
D、timing
答案
D
解析
语义衔接题。首段提到生物钟的作用:It tells…when to…it tells animals and human beings when…and even dreams,可见大脑中的一些细胞是能控制某些行为的时间选择的,[D]timing表示时间的选择和安排,符合语义,故答案为[D]。
转载请注明原文地址:https://tihaiku.com/zcyy/3581764.html
相关试题推荐
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
[originaltext]Scientistshaveobservedthatplantsthemselvesproducemany
Twogroupsofscientistsdemonstratedlastweekforthefirsttimethatthe
Twogroupsofscientistsdemonstratedlastweekforthefirsttimethatthe
Twogroupsofscientistsdemonstratedlastweekforthefirsttimethatthe
随机试题
Themarketinvestigationisindispensabletosalespromotion.Theyareascl
下列关于红细胞的叙述,错误的是A.红细胞的生理功能是通过胞内的血红蛋白来实现的
A.不仅关心患者的躯体,而且关心患者的心理 B.注意克服人~物~人的物化趋势
人们描述幼儿教师是幼儿“生活中的妈妈,学习中的老师,游戏中的伙伴”,这说明幼儿教
阅读下面材料,回答问题。 李老师是一位青年教师,工作热情非常高,他对学生的要求
企业的NNI考评一般是由()通过否决考评来进行的。A.总经理 B.人力资源部
不是甘草归经的是( ) A.肺 B.脾 C.胃 D.肝
对下列哪些重大犯罪嫌疑分子,公安机关可以执行先行拘留?A:为投毒而买毒药的甲B
生成组织液的有效滤过压等于A.(毛细血管血压+血浆胶体渗透压)-(组织液胶体渗透
细菌性痢疾与阿米巴痢疾的最重要鉴别点是A.腹痛部位不同 B.起病急慢的不同
最新回复
(
0
)