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
44
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】_________.
【C2】
选项
A、difference
B、change
C、gap
D、departure
答案
D
解析
名词词义辨析。前一分句提到正常温度需要在37℃左右,本分句讲到较小的变化会严重破坏生物酶系统的正常功能,谓语动词impair表示“削弱”。选项中的departure与impair最搭配,意为“脱离常规”。故答案为D。
转载请注明原文地址:https://kaotiyun.com/show/XGGO777K
0
考博英语
相关试题推荐
Itwasrainingheavily,littleMaryfeltcold,soshestood______tohermother.(中国矿业大学2010年试题)
(上海理工大学2006年试题)Inatelephonesurveyofmorethan2,000adults,21%saidtheybelievedthesunrevolved(旋转)aroundtheearth
Writeacompositioninthetitle"HowtoEliminateFakeDiplomas"basedonthefollowinggivenoutlineinChinese.Yourcomposit
Inmoderndays,onthewesternbankoftheupperTigrisRiverstandsanIraqicitycalledQal’atShartlat.Thousandsofyearsag
Forthelast20yearsorsothesubjectofglobalwarminghas______heateddebateamongtheworld’sbrightestminds.
Withaneighty-hourweekandlittleenjoyment,lifemusthavebeenvery______forthenineteenth-centuryfactoryworkers.
WhenAputtingBinhistoricalperspective,fromthetimeofFranklinRoosevelt’sNewDealtoCthepresent,theDfallenstatusof
Theschoolcommitteenaturallyhopethattheirchoiceofplaywillbe______withtheschoolandparents.
Surveyshaveshownthatmostfootballandbasketballinjuriesinvolvetheknee,eitherthroughtwistingorthroughapplicationo
GeorgeOrwell’sNineteenEighty-fourwasfarmoreprescientthananypersonwhogrewupinthemiddledecadesofthe20thcentur
随机试题
男性,40岁,农民,低热伴胸闷、气短2周。不能平卧伴下肢水肿3天收急诊。医生怀疑渗出性心包积液,体检可发现下述体征,除了
植物中蒽醌衍生物的存在形式主要是
A.肾结石B.膀胱-输尿管反流C.感染性尿道综合征D.非感染性尿道综合征E.静脉肾盂造影
间接代理报关是指报关企业接受委托人(即进出口货物收发货人)的委托,以委托人的名义办理报关业务的行为。
下列资产负债表各项目中,属于流动负债的有()。
下列关于个人独资企业的表述中,正确的是()。
从各金融业态的特点来看,商业银行强大的资金实力、庞大的客户基础、便捷的服务网络、高效的风控技术,使其在混业经营过程中最具优势,最有条件作为金融控股平台,布局其他非银行金融领域。()
下列四个节目中,杭州市白昼最长的是()。
家庭计算机用户上网可使用的技术是______。 ① 电话线加上Modem ② 有线电视电缆加上Cable Modem ③ 电话线加上ADSL ④ 光纤到户(FTTH)
FronthepassagewecaninferthatAmericawonitsindependencein______.HowoldwasThomasJeffersonwhenhebecameGovernor
最新回复
(
0
)