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
2023-08-28
15
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] 【C4】
选项
A、outside
B、aside
C、inside
D、beside
答案
A
解析
语义衔接题。本空所在句是第二段的主题句。由本段所举的西伯利亚仓鼠根据日照的时间改变皮毛颜色的例子可推断,本段说的是动植物外部的因素也可能影响生物钟,[A]outside意为“在…之外”,符合语义,故答案为[A]。
转载请注明原文地址:https://tihaiku.com/zcyy/2965491.html
相关试题推荐
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
随机试题
[originaltext]W:So,haveyoufoundajobyet?M:No,but,Ihaveafewintervi
Whatisthefocusofthewoman’spresentation?[br][originaltext]F:Hi,Profes
Whatissaidaboutthe"beautymachine"inthefirstparagraph?[br]What’sthe
绘制总平面图时,应以建筑哪层平面作为总图平面?( )A.建筑地下层 B.含有
A.胎头位于子宫底部,胎心位于脐右下方 B.胎头在耻骨上方,胎心位于脐左下方
男性,42岁。患哮喘十年余,近三年经常夜间感口苦、烧心。体检:气管居中,双肺叩诊
基金管理公司董事在公司治理中不需要遵守的原则的是( )。A.公司独立运作原则
某初产妇,自临产至宫口扩大2cm共耗19小时,从此至宫口开全共耗10小时,经过处
64岁,男性患者。反复咳嗽、咳痰,痰中带血2周。体温38.3℃,WBC12X
上海期货交易所上市的期货品种包括()等。A.铜 B.镍 C.锌 D.铅
最新回复
(
0
)