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
38
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.
【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://kaotiyun.com/show/0KKO777K
0
专业英语八级
相关试题推荐
SituationComedyToday’slectureisaboutsituationcomedy,itshistory,itscharacteristicsandsomefamouscomediesinthe
TherehasbeenanecologicaltriumphintheprovincesofSwedenwhereIhavespentthepastthreeweeks.Thewolfandthelynx(
AreWeReadytoOpen?Emailhasthepotentialasacost-efficientandeffectivemarketingstream.Touseitanduseit
InthefirstepisodeofSixFeetUnder,apopularAmericantelevisionshowairedearlierthisdecade,alargecorporationtries
Theimmediatepurposeofthegovernmentloanguaranteestothetwosolarenergycompaniesis
Thereisanever-endingsupplyofbusinessgurustellingushowwecan,andmust,domore.SherylSandbergurgeswomento"Lean
WhichofthefollowingwasNOTafactorwhichhadcontributedtothefactthatBritainwasthefirstcountrytoindustrialize?
Traditionalplantbreedinginvolvescrossedvarietiesofthe【M1】______samespeciesinwaystheycouldcrossnaturally.Forexa
ThegrammaticalcategoryreflectedinI/me,he/him,she/heriscalled______.
InawindowlessroomontheUniversityofCalifornia,Berkeley,campus,twoundergradsareplayingaMonopolygamethatoneoft
随机试题
在我国,债权人行使代位权的方式是()
关于孕产期保健,以下正确的是
进口设备外贸手续费的计算公式为:外贸手续费=( )×人民币外汇牌价×外贸手续费率。
用专门借款构建的固定资产达到预定可使用状态后,其借款利息计入()。
复式记账就是对每一项经济业务,都以相等的金额同时在总账及其所属明细账中进行登记的一种记账方法。()
时期指标和时点指标的分类依据是()。
甲公司于2×21年1月3日购入专利权支付价款240万元。该无形资产预计使用年限为8年,法律规定年限为6年。2×22年12月31日,由于与该无形资产相关的经济因素发生不利变化,致使其发生减值,甲公司估计可收回金额为120万元。假定无形资产按照直线法进行摊销,
患者女性,16岁,初二学生两个月前患者的邻座的一位同学患肾炎,患者担心会传染给自己,白天在学校穿的衣服回家后就换下来洗掉,并反复洗手,开始时只在饭前便后洗手,慢慢出现洗手次数增加,父母如不阻止可以连续洗上十余分钟至半小时,从手部直洗到肩以下的上臂
如果偶然性不起任何作用的话,那么世界历史就会带有非常神秘的性质。这一结论是()。
0,1,1,2,4,8,()
最新回复
(
0
)