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
49
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
Languageislearnedprimarilythroughcommunicationwithotherpeople.Resea
[originaltext]M:Danalookssorelaxedandhappy.Shewasalwayseatingwhenever
甲公司是生产工程设备配件的上市公司。为了应对行业竞争,公司计划增加一条新的生产线
距肛门4cm处的直肠癌,治疗宜采用 A.腹会阴联合切口直肠癌根治术(Miles
下列医疗器械注册证编号最可能为“国械注准20153150961”的是A.反光镜
牙周脓肿指的是()A.牙周组织的脓肿 B.异物刺入牙周组织形成的脓肿 C.牙
进口化妆品报检时必须提供《进出口化妆品标签审核证书》或《标签审核受理证明》。(
下列各项中属于应征消费税的项目有( )。A.烟叶 B.果啤 C.宝石坯 D
网络营销将商品信息发布、收款和售后服务做了很好的集成,这体现了网络营销的()A.
下列费用中,属于建筑安装工程费用中规费的有()。A.生育保险费 B.失业
最新回复
(
0
)