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 bound-aries of effective func
Cells cannot remain alive outside certain limits of temperature, and much narrower limits mark the bound-aries of effective func
admin
2016-01-30
43
问题
Cells cannot remain alive outside certain limits of temperature, and much narrower limits mark the bound-aries of effective functioning. Enzyme systems of mammals and birds are most efficient only within a narrow【C1】______around 37℃; a【C2】______, of a few degrees from this value seriously impairs their functioning. Even though cells can survive wider【C3】______, the integrated actions of bodily systems are impaired. Other animals have a wider tolerance【C4】______changes of body temperature.
For centuries【C5】______has been recognized that mammals and birds differ from other animals in the way they regulate body temperature. Ways of【C6】________ the difference have become more accurate and meaningful over time, but popular terminology still reflects the old division【C7】_________ " warm blooded" and " cold blooded" species; warm blooded included mammals and birds,【C8】______all other creatures were considered cold blooded.【C9】______more species were studied, it became evident that this classification was【C10】______A fence lizard usually has a body temperature only a degree or two below【C11】______of humans and so is not cold.【C12】______the next distinction was made between animals that maintain a【C13】______body temperature and those whose body temperature varies with their environment. But this classification also proved inadequate,【C14】______among mammals there are many that vary their body temperatures during hibernation.【C15】______ many invertebrates that live in the【C16】______of the ocean never experience a change in the chill of the deep water, and their body temperatures remain constant. The current distinction is between animals whose body temperature is【C17】_________chiefly by internal metabolic processes and those whose temperature is regulated by the【C18】______The latter do so mainly by moving to favorable sites or by changing their exposure to【C19】_________ sources of heat. Mammals and birds also regulate their temperature by choosing favorable environments, but primarily they regulate their temperature by making a variety of internal【C20】_________.
【C15】
选项
A、However
B、On the other hand
C、Furthermore
D、For example
答案
C
解析
逻辑关系。前句提到即便新的分类也不充分,接着举例说明。本句是第二个例子,与前句形成递进关系。故答案为C。
转载请注明原文地址:https://kaotiyun.com/show/nGGO777K
0
考博英语
相关试题推荐
(复旦大学2010年试题)Businessandgovernmentleadersconsidertheinflationratetobeanimportantgeneralindicator.Inflationis
AreweatthebeginningofanotherAgeofExploration?Perhapsevenmoreimportant,areweatthebeginningof【C1】______AgeofC
Nowomancanbetoorichortoothin.ThissayingoftenattributedtothelateDuchessofWindsorembodiesmuchoftheoddspiri
Thetiesthatbindustogetherincommonactivityareso______thattheycandisappearatanymoment.
Chooseoneappropriatewordfromthefollowingwordbanktofillintheblanknumberedfrom91to105inthepassagebelow.Chan
胜利者通过认识自我、展现自我、成为可信赖并负责任的人,才能体验真实的自我。他不会畏惧独立思考并运用自己的知识。他甄别主观事实和宏观事实,不会假装什么事情都懂。他听取别人的意见、评价别人的意见,但得的结论一定是自己的。他能够欣赏和尊重他人,但绝不被他人牵制和
InChristianwritersitisnaturalthatlogicalexplanationsofthegenerallawofstormsshouldcenterabouttheDevil.Clement
“失落之城”马丘比丘坐落在秘鲁热带山地森林,直到1911年才被美国探险家海勒姆·宾厄姆发现。马丘比丘海拔2430米,为热带森林所包围。它可能是印加帝国全盛时期最辉煌的城市建筑,那巨大的城墙和梯田好像是在连绵的悬崖绝壁上自然形成的一样。古城矗立在安第斯山脉东
FreeAdviceIsJustAroundtheCornerWhenDanielFranklin,apoliticalscienceprofessorfromAtlanta,neededcareeradvanc
随机试题
金融业(不包括典当业)营业税的纳税期限为()。
A.银翘散B.新加香薷饮C.羚角钩藤汤D.黄连解毒汤E.安宫牛黄丸以上首选用于治疗急惊风湿热疫毒证的方剂是
中药传统的给药途径是
土地征用及迁移补偿费是指建设项目通过()土地使用权支付的费用。
按现行政策在营业税中,以营业收入减去一定的支出作为计税依据计征营业税的业务包括()。
山脉构成我国地形的骨架,山脉延伸的方向称作走向,下列选项中不属于南北走向山脉的是()。
发展经济_________可以为城市文化增加筹码,_________文化传承、文化内涵的提升以及文化事业的发展,_________不可或缺的,城市的文化含金量如何,并不在于能否造起几幢标志性建筑,而是取决于市民的文化素质。填入画横线部分最恰当的一
Itwasthedistrictsportsmeeting.Myfootstillhadn’thealed(痊愈)froma(n)【C1】______injury.Ihad【C2】______whetherornotIs
WhichmountainboaststhehighestpointinCanada?
Itseemsthatthereisnomiddlegroundwhenitcomestocats.Peopleeitherlovethemorhatethem.Thesefeelingsarenotnew
最新回复
(
0
)