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
60
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] 【C10】
选项
A、ruthless
B、annoyed
C、restless
D、anxious
答案
C
解析
形容词辨析题。通过下文得知,当鸟类迁徙结束后,它们又恢复以前的状态。由此判断,当迁徙时间已到,而又被阻止不能迁徙的鸟类应有的状态是“不平静的”(calm的反义词)。所以选C.restless,表示“不平静的,不安宁的”。ruthless“无情的,残忍的”;annoyed“苦恼的”;anxious“担忧的,渴望的”。
转载请注明原文地址:http://tihaiku.com/zcyy/2993669.html
相关试题推荐
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
Scientistssaytheyhavehighhopesforadrugthatcouldonedayprovidean
Scientistssaytheyhavehighhopesforadrugthatcouldonedayprovidean
[originaltext]M:Youlikelivinginthecity,don’tyou?W:Oh,Iloveit.It’s
[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
[originaltext]Scientistssaysharkshavelivedintheworld’soceansformi
随机试题
Anintelligentpersonwillnotallowhimselftobeinfluencedbyadvertisemen
[originaltext]W:Iwasworkingonapaperaboutthedifferencesbetweenwomena
SubfieldsofLinguisticsⅠ.Sociolin
形成信托关系应当有信托文件,即设立信托应当采取书面形式。()
天王补心丹最适宜于治疗郁证的证型是A.心脾两虚证 B.气郁化火证 C.心神失
为了获取盈利,商业银行在正常范围内可以建立()的资产负债期限结构。A.借短贷短
药物信息的主要类型包括A.印刷型 B.网络型 C.声像型 D.微缩型 E
在生长活跃的青春前期,新生的龋蚀急速地发展,牙质崩坏的是A.奶瓶龋 B.少年龋
依据《通用安装工程工程量计算规范》(GB50856—2013),对于在工业管道主
某地建设行政主管部门检查某施工企业的施工工地,发现该施工企业没有按照施工现场管理
最新回复
(
0
)