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
52
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] 【C9】
选项
A、transportation
B、emigration
C、immigration
D、migration
答案
D
解析
语义衔接题。由下旬中的when it is time for the trip可推断出,鸟类开始的这次飞行应该是“迁徙”,[D]migration泛指从一个地方到另一个地方定居,不一定是国家和国家之间的迁徙,故答案为[D]。[A]transportation意为“交通运输”;[B]emigration意为“移民出境”,指离开说话人所在的国家移居到别处去;[C]immigration意为“外来的移民移居入境”,移居到说话人所在的国家,并且获得公民身份和获得永久居住权。
转载请注明原文地址:https://tihaiku.com/zcyy/2965496.html
相关试题推荐
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
[originaltext]Scientistshaveobservedthatplantsthemselvesproducemany
[originaltext]Scientistshaveobservedthatplantsthemselvesproducemany
Twogroupsofscientistsdemonstratedlastweekforthefirsttimethatthe
Twogroupsofscientistsdemonstratedlastweekforthefirsttimethatthe
随机试题
[originaltext]W:Steve,canyoutellmehowlongyou’vebeenapubowner?M:We
中性点经消弧线圈接地是为了( )。A.根除断续电弧接地过电压 B.限制断续电弧
当土为中密的砂土,深度在5m以内的沟槽边坡的坡顶无荷载时最陡坡度是()。A.1
试讲题目1.题目:志愿填报,海阔天空 2.内容: 职业“投币机”活动规则
下面不属于病史主诉的为A.治疗过程 B.症状 C.病程 D.停经天数 E
不符合脑死亡的判断标准的是A:对刺激无感受性及反应性 B:运动、无呼吸 C:
A.AB.BC.CD.D
某9层钢结构办公建筑,房屋高度H=34.9m,抗震设防烈度为8度,布置如题24-
男性,65岁,因心搏骤停进行心肺复苏术。下述叙述正确的是( )。A.尽管有心室
心室肌0期除极化的描述,错误的是A.由快Na+通道激活开放弓 B.阈电位水平大
最新回复
(
0
)