首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective func
Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective func
admin
2016-02-23
45
问题
Cells cannot remain alive outside certain limits of
temperature and much narrower limits mark the boundaries of
effective functioning. Enzyme systems of mammals and birds are
most efficient only with a narrow range around 37℃; a departure【M1】______
of a few degrees from this value serious impairs their functioning.【M2】______
Even though cells can survive wider fluctuations the integrated
actions of bodily systems are impaired. Other animals have a wide【M3】______
tolerance for changes of bodily temperature.
For century it has been recognized that mammals and birds【M4】______
differ other animals in the way they regulate body temperature.【M5】______
Ways of characterizing the difference have become more accurate
and meaningful over time, but popular terminology still reflects an【M6】______
old division into " warm-blooded" and " cold-blooded" species;
warm-blooded included mammals and birds whereas all other
creatures were considered cold-blooded. As more species were
studied, it became evident that this classification was adequate. A【M7】______
cold-blooded fence lizard usually has a body temperature only a
degree or two below those of humans and so is not cold. Therefore【M8】______
the next distinction was taken between animals that maintain a【M9】______
constant body temperature, called homeotherms, and those whose
body temperature varies with their environments, called
poikilotherms. But this classification was also proved inadequate,【M10】______
because among mammals there are many that vary their body
temperatures during hibernation. Furthermore, many invertebrates
that live in the depths of the ocean never experience change in the
depths of the ocean, and their body temperatures remain constant.
【M4】
选项
答案
century一centuries
解析
词汇错误。For centuries是固定短语,意为“几个世纪以来”。
转载请注明原文地址:https://kaotiyun.com/show/eKKO777K
0
专业英语八级
相关试题推荐
AccordingtoNigel,mostproblemsofairtravelarecausedby______.
TherehasbeenanecologicaltriumphintheprovincesofSwedenwhereIhavespentthepastthreeweeks.Thewolfandthelynx(
EndtheUniversityasWeKnowIt1.ProblemsconfrontingAmericanuniversitiesA.impracticalgraduate【B1】【B1】______B.isolat
ArecentstudybyGermanresearcherspresentsthepossibilityof"carbonfarming"asalessriskyalternativetoothercarbonca
Whatkindofdamagehasthewildfirealreadycaused?
Bythetwenty-firstcentury,morepeoplewillbedescendantsofthenon-Westerngroupsthatanthropologistshavetraditionally
Ascientifictheoryisapublicpronouncementthatindicateswhatascientistbelievestobetrueabouthisorherspecificare
WhichofthefollowingwasNOTafactorwhichhadcontributedtothefactthatBritainwasthefirstcountrytoindustrialize?
Therelationshipof"Theyaregoingtohaveanotherbaby"and"Theyhaveachild"is
Changesinthetechnologyofcommunicationareoccurringsorapidlythatwehumanbeingsnowmovethroughacloudofmessagesa
随机试题
如果二叉树中任何一个结点的值都小于它的左子树上所有结点的值而大于右子树上所有结点的值,要得到各结点值的递增序列,应按下列哪种次序排列结点()
慢性腹泻是指腹泻时间超过()
属于蛋白同化激素的药物是
大华建筑公司承包中信科技有限公司的办公楼扩建项目,根据《建筑法》有关建筑工程发承包的有关规定,该公司可以()。
数项级数的部分和数列有界是该级数收敛的:
甲股份有限公司(以下简称“甲公司”)为上市公司,2014年至2016年与长期股权投资有关资料如下:(1)2014年6月30日,甲公司取得乙公司持有的丙公司60%股权,能够对丙公司实施控制,当日,丙公司可辨认净资产账面价值为8400万元,可辨认净资产公允价
中国摄影协会所属的法人类别是()。
下列选项中属于趋一避动机冲突的有()(2013.68)
石船市的某些中学办起了“校中校”,引起人们的议论,褒贬不一。“校中校”指的是在公办学校另设的、高价接收自费择校生的学校。择校生包括学习优秀生、特长生,也包括没有特长还要择校的“特需生”。其中“特需生”每年要交纳3000元左右的学费。学费的数量大大超过公费生
A、疾病导致人活动量减少B、病人患病期间营养过剩C、药物引起内分泌紊乱D、体内蓄积了太多脂肪C
最新回复
(
0
)