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
28
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] 【C5】
选项
A、feather
B、skin
C、fur
D、peel
答案
C
解析
语义衔接题。空所在句的下句中的its fur提示本空答案为[C]。
转载请注明原文地址:https://tihaiku.com/zcyy/2965492.html
相关试题推荐
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmun
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmun
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmun
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmun
Scientistssaytheyhavehighhopesforadrugthatcouldonedayprovidea
Scientistssaytheyhavehighhopesforadrugthatcouldonedayprovidea
Scientistssaytheyhavehighhopesforadrugthatcouldonedayprovidea
[originaltext]Scientistssaysharkshavelivedintheworld’soceansformi
Forthispart,youareallowed30minutestowriteashortessayentitledLiving
Scientistshavediscoveredstrandsofgeneticcodelinkedtoshortsight,th
随机试题
患儿女性,2岁,左鼻塞、涕中带血伴恶臭10天。诊断应首先考虑A.左鼻窦炎 B.
A.肾癌 B.肺癌 C.淋巴肉瘤 D.乳腺癌 E.前列腺癌血液酸性磷酸酶
在我国资产评估行业发展中,起主导作用的是( )。A、政府 B、市场 C、国外
男性,48岁,咳嗽、痰中带血伴右侧胸痛3周就诊,临床和影像学诊断右下肺叶中央型肺
乡村旅游规划的制定应( )。A.符合当地实际 B.强化乡土风情、乡居风貌和文
下列结构类型中,加入氢氧化钙能产生沉淀的是A.蛋白质B.多糖C.鞣质D.皂苷E.
真核细胞型微生物的特点是A.细胞分化程度较高,无核膜、核仁,胞质内细胞器完整
甲快递公司(以下简称“甲公司”)为增值税一般纳税人。2019年10月,甲公司购进
一般从水文地质柱状图中可获取的信息有( )。A.潜水水位 B.含水层厚度
A.予以隔离治疗,隔离期限根据医学检查结果确定 B.确诊前在指定场所单独隔离治
最新回复
(
0
)