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
8
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] 【C11】
选项
A、Then
B、So
C、And
D、But
答案
D
解析
逻辑衔接题。上句说的是被阻止不能迁徙的鸟类的状态是不平静的,本句说的是迁徙结束后鸟类又恢复平静,上句和本句为转折关系,故答案为[D]。
转载请注明原文地址:https://tihaiku.com/zcyy/3581762.html
相关试题推荐
Scientistshavediscoveredstrandsofgeneticcodelinkedtoshortsight,th
Scientistshavediscoveredstrandsofgeneticcodelinkedtoshortsight,th
Livingstandardshavesoaredduringthe21stcentury,andeconomistsexpect
Livingstandardshavesoaredduringthe21stcentury,andeconomistsexpect
Livingstandardshavesoaredduringthe21stcentury,andeconomistsexpect
Livingstandardshavesoaredduringthe21stcentury,andeconomistsexpect
Livingstandardshavesoaredduringthe21stcentury,andeconomistsexpect
Livingstandardshavesoaredduringthe21stcentury,andeconomistsexpect
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
随机试题
In1900,theworld’suseofpaperwasabout______foreachpersoninayear.[b
关于三叉神经根微血管减压术,下列说法错误的是A.适用于术前已明确三叉神经痛是由于
患儿男,8岁。出生6个月至1岁胸部逐渐出现凹陷畸形。查体:胸骨呈凹陷状,颈前屈,
A.虚寒证 B.虚热证 C.真寒假热证 D.真热假寒证 E.阴阳两虚证阳
证券服务机构为证券的()等证券业务活动制作、出具审计报告、资产评估报告、财务顾
以下关于反洗钱和反恐怖融资监控名单监控的说法中,错误的是( )。A.恐怖组织及
设函数f(x)在[-a,a]上连续,下列结论中哪一个是错误的?
A. B. C. D.
波特认为有5种力量决定整个市场或其中任何一个细分市场的长期的内在吸引力。这5个
关于工业炸药的基本要求说法错误的是()。A.爆炸性能好,有足够的威力以满足各种
最新回复
(
0
)