首页
登录
职称英语
The term biological clock is applied to the means by which living things adj
The term biological clock is applied to the means by which living things adj
游客
2024-02-04
61
管理
问题
The term biological clock is applied to the means by which living things adjust their activity patterns, without any【B1】______ cue, to the time of day, or the month, or the year. The biological clocks seem to be beautifully【B2】______ the needs of living things. They are affected but little, if at all, by drugs, chemicals, or wide temperature difference —【B3】______ which may alter substantially the rates of all ordinary processes of the body.
The nature of the biological clocks’【B4】______ is still a mystery. Two quite different theories can【B5】______ them. According to the first of these theories, each individual contains its own independent timing system. This is believed to have【B6】______, aided by natural selection, as an adaptation to the rhythmic environment. It has now become independent of the environment. The other theory holds that living things react【B7】______ to their rhythmic physical environment. The setting of their biological clocks, therefore,【B8】______ a constant adjustment to subtle environment forces. But the search for the【B9】______ timing system has been futile thus far. Not only has no independent timing system ever been discovered, but there has not yet been even a guess【B10】______ its nature. [br] 【B4】
选项
答案
mechanism
解析
根据空格前的所有格clocks’可知,此空需要名词。mechanism“机制”。
转载请注明原文地址:http://tihaiku.com/zcyy/3420793.html
相关试题推荐
[originaltext]Withgrowingnumbersofpeoplelivingalone,eitherbychoice
[originaltext]Withgrowingnumbersofpeoplelivingalone,eitherbychoice
[originaltext]Withgrowingnumbersofpeoplelivingalone,eitherbychoice
Differentthingsusuallystandfordifferentfeelings.Red,forexample,is
Differentthingsusuallystandfordifferentfeelings.Red,forexample,is
Differentthingsusuallystandfordifferentfeelings.Red,forexample,is
Differentthingsusuallystandfordifferentfeelings.Red,forexample,is
[originaltext]Wearenowlivinginaworldinwhichrobotsaretakingover
[originaltext]Wearenowlivinginaworldinwhichrobotsaretakingover
Lookingforanewweightlossplan?Trylivingontopofamountain.Mountai
随机试题
SoftDrinkManufacturer:Ournewchildren’ssoftdrink,RipeCal,isfortifiedwi
HowPsychologyCanHelpthePlanetStayCool[A]"I’mnotconvinced
BillGateswas20yearsold.SteveJobswas21.WarrenBuffettwas26.Ralph
为了解市民家庭存书(不含教材教辅)阅读和共享意愿情况,某市统计局成功访问了18岁
正常淋巴结针吸涂片中主要的细胞是A.小淋巴细胞B.原淋巴细胞C.幼淋巴细胞D.网
下列物质所属软膏基质的种类分别为 A.脂类基质 B.硅酮类基质 C.水溶性
甲亢患者术前准备最重要的是A.测定基础代谢率 B.心理护理 C.喉镜检查
A. B. C. D.
下列各项关于企业所得税税前扣除项目及其标准的表述中,正确的有()。A.软件
女,34岁,上腹部疼痛3天,右下腹疼痛12小时,体温37.8℃,既往有溃疡病史,
最新回复
(
0
)