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
48
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
Thenuclearfamily______aself-contained,self-satisfyingunitcomposedoffather,motherandchildren.(北京大学2006年试题)
AreweatthebeginningofanotherAgeofExploration?Perhapsevenmoreimportant,areweatthebeginningof【C1】______AgeofC
In1987,H.I.V/AIDSjoinedalistofthatcouldkeepapersonoutoftheUnitedStates.Thegovernmentlatertriedtocanceli
In1987,H.I.V/AIDSjoinedalistofthatcouldkeepapersonoutoftheUnitedStates.Thegovernmentlatertriedtocanceli
Chooseoneappropriatewordfromthefollowingwordbanktofillintheblanknumberedfrom91to105inthepassagebelow.Chan
Today,theTowerofLondonisoneofthemostpopulartourist【C1】______andattractsoverthreemillionvisitorsayear.Itw
InmanyMiddleEasterncultures,deadlineistakenasa(n)______andsuchbusinessbehaviormaylosetheoverseassalespersonbus
Changingfromsolidtoliquid,watertakesinheatfromallsubstancesnearit,andthis______producesartificialcoldsurround
在当今快速发展变化的世界,各行各业的领导者都需要有充分的想象力和批判精神,而非某种不成熟的狭隘观点。就现实而言,坚实的人文和科学学科的教育通常会对很多具有挑战性的高级职业,以及越来越多的成年人追求的职业做着最实实在在的准备。没有任何一个特别的研究领域会永远
随机试题
商品耳环石斛的原植物是
现浇结构楼板的底模和支架拆除时,当设计无要求时,对跨度大于8m的梁混凝土强度达到()时方可拆除。
项目进度控制的依据是()。
非储备外汇减少就意味着国内需求增加,非储备外汇增加就意味着国内需求减少。()
贷款人有下列()情形时,银监会可以采取《中华人民共和国银行业监督管理法》第三十七条规定的监管措施。
教育心理学普遍认为西方第一本《教育心理学》出版于【】
男性在40多岁甚至更年轻时就出现患心脏病和严重的冠状动脉疾病的可能性,而女性在50岁以及经历了绝经期后才会真正开始面对这种风险,这让女性在遭遇无论对男性还是女性而言都是第一杀手的心脏疾病之前,赢得了更多的时间。经过研究,女性第一次心脏病发作的时间比男性晚了
随着计算机技术向着千万亿次乃至更高的级别迈进,处理器速度已经超越了传输速度,这就在应用领域产生了一个技术瓶颈,阻碍了应用的进一步发展。任何尝试过拨号上网看流媒体视频的人都有所体会,再快的处理器也不能提高文件加载速度。而在大数据和云计算的当今,在服务器之间有
KeepingCutFlowers1Whileeverybodyenjoysfreshcutflowersaroundtheirhouse,fewpeopleknowhowtokeepthemforaslon
(1)Allovertheworld,yourchancesofsuccessinschoolandlifedependmoreonyourfamilycircumstancesthanonanyotherfa
最新回复
(
0
)