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
2024-05-28
2
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] 【C12】
选项
A、what
B、which
C、why
D、how many
答案
B
解析
语义衔接题。根据本句大意可知,研究者们研究的是大脑哪些部位起作用,因此选择B。
转载请注明原文地址:https://tihaiku.com/zcyy/3609937.html
相关试题推荐
[originaltext]W:Whatdoyoudoforaliving,Frank?M:Iamanaerospaceengin
[originaltext]W:Whatdoyoudoforaliving,Frank?M:Iamanaerospaceengin
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowingana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowingana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowingana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowingana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowingana
Everyonelivinginthissocietyshouldcommunicatewitheachother.Theyge
Everyonelivinginthissocietyshouldcommunicatewitheachother.Theyge
Everyonelivinginthissocietyshouldcommunicatewitheachother.Theyge
随机试题
Thefoodweeatseemstohaveprofoundeffectsonourhealth.【C1】______sc
[originaltext]W:You’renotgoingtomakethecall,areyou?Aren’tyougoingt
[originaltext]W:So,haveyoufoundajobyet?M:No,but,Ihaveafewleads,
延时曝气法进行低浓度污水处理是利用处于()的微生物。A.缓慢期 B.对数期
关于化脓性迷路炎,关于其说法错误的有A.炎症可进一步向颅内扩散,引起颅内并发症
预算定额的作用不包括()。A.是编制施工图预算、确定建筑安装工程造价的基础
劳动统计报表制度的统计范围包括乡镇企业、私营单位和个体工商户。( )
(2018年真题)期货交易所依法对保证金的安全实施监控。()
矿山发生重伤、死亡事故后,矿山企业应当在()h内如实向劳动行政主管部门和管理矿
关于大体积混凝土施工的说法,错误的是( )。A.宜选用低水化热和凝结时间长的水泥
最新回复
(
0
)