首页
登录
职称英语
Cells cannot remain alive outside certain limits of temperature and much na
Cells cannot remain alive outside certain limits of temperature and much na
游客
2023-11-30
34
管理
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. [br] 【M10】
选项
答案
was—去掉was
解析
词汇错误。prove在表示“证明是,原来是”这一意思时,通常用在prove to be这一结构中,其中to be可以省略。例如:The rumor proved(to be)true.这谣传证明是真的。
转载请注明原文地址:https://tihaiku.com/zcyy/3231853.html
相关试题推荐
Youngpeoplearefacinganuncertainfuture.Asthe21stcenturydawned,the
Youngpeoplearefacinganuncertainfuture.Asthe21stcenturydawned,the
Youngpeoplearefacinganuncertainfuture.Asthe21stcenturydawned,the
Youngpeoplearefacinganuncertainfuture.Asthe21stcenturydawned,the
ThreeConceptsinArtHistoryI.Commonalities-Certainchunkof【T1】_____,【T1】_
ThreeConceptsinArtHistoryI.Commonalities-Certainchunkof【T1】_____,【T1】_
ThreeConceptsinArtHistoryI.Commonalities-Certainchunkof【T1】_____,【T1】_
ThreeConceptsinArtHistoryI.Commonalities-Certainchunkof【T1】_____,【T1】_
ThreeConceptsinArtHistoryI.Commonalities-Certainchunkof【T1】_____,【T1】_
ThreeConceptsinArtHistoryI.Commonalities-Certainchunkof【T1】_____,【T1】_
随机试题
HowtoWriteaDissertationI.Twonecessarypreparations
AliceisMr.Liu’s______.[br]AlicewantsProf.Kingtogivehim______.somen
Howusefularetheviewsofpublicschoolstudentsabouttheirteachers?
Thevisionofthatbigblackcarhittingthesidewalkafewfeetfromuswillne
[originaltext]WhenJustinBassettinterviewedforanewjob,heexpectedth
世界上有一小部分人具有抗疟疾的能力,原因是这些人细胞内发生了一个点突变,这个突变
有关血糖的叙述,下列哪项是错误的A.肝脏有活性很高的糖异生酶类,对维持饥饿时血糖
患儿,男,8月龄,因发热、呕吐、腹泻,大便为蛋花样水样便,诊断为病毒性肠炎。护士
劳动者成为劳动法律关系主体的前提条件是必须具有劳动权利能力和( )。A.劳动能
单位第52笔经济业务需涉及3张记账凭证,则正确的编号为()。A:152、252、
最新回复
(
0
)