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
2023-09-07
70
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 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 Siberian 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 in 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 can 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 the biologicaI 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. 【C16】______ call take many days for a human body to 【C17】______ a 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] 【C14】
选项
A、why
B、how
C、when
D、where
答案
B
解析
疑问副词辨析题。根据下文可知.如果我们经常更换工作时间,我们的身体会不适应。这正是生物钟影响我们工作的体现,所以B正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2993673.html
相关试题推荐
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Scientistssaytheyhavehighhopesforadrugthatcouldonedayprovidean
Scientistssaytheyhavehighhopesforadrugthatcouldonedayprovidean
Scientistssaytheyhavehighhopesforadrugthatcouldonedayprovidean
[originaltext]M:Youlikelivinginthecity,don’tyou?W:Oh,Iloveit.It’s
[originaltext]M:Youlikelivinginthecity,don’tyou?W:Oh,Iloveit.It’s
[originaltext]Scientistssaysharkshavelivedintheworld’soceansformi
[originaltext]Scientistssaysharkshavelivedintheworld’soceansformi
ClimateChangeScientistspredictincreasi
随机试题
Despitethestagnancyoftheeconomy,high-technologycompaniesarestillcr
[originaltext]M:Youtalkedaboutevolution.Youtalkedaboutgenes.Andthere’
VisitorstoSt.PaulCathedralaresometimesastonishedastheywalkround
根据下面的统计表回答问题。 1998年铁山港区与去年同比增长最快的是(
吸入性麻醉药的吸收及其作用的深浅快慢首先取决于药物在A、血液中的浓度 B、中枢
下列说法正确的是:() A.在短期贷款和中长期贷款中,非金融企业及其他部门
我国证券交易所的理事会具有的职责有()。 A.审定总经理提出的工作计划B.
下列关于工作分析时使用的观察法的描述,正确的是()。A:能够比较全面和深入地了解
按照费用构成要素划分的建筑安装工程费中,下列属于企业管理费的是( )。A.采购
(2019年真题)某企业建设一座冷藏容量为5000L的货架式冷库。使用以液氨作为
最新回复
(
0
)