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
36
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】_________.
【C11】
选项
A、which
B、that
C、what
D、much
答案
B
解析
代词用法。空格需填一个代词,代替前面提到的温度,选项中只有that可以指代前面所用到的词,以避免用词的重复。故答案为B。
转载请注明原文地址:https://jikaoti.com/ti/gyyYFFFM
0
考博英语
相关试题推荐
(上海理工大学2006年试题)Inatelephonesurveyofmorethan2,000adults,21%saidtheybelievedthesunrevolved(旋转)aroundtheearth
Somepeoplefindthatcertainfoods______theirheadaches.(复旦大学2011年试题)
Chooseoneappropriatewordfromthefollowingwordbanktofillintheblanknumberedfrom91to105inthepassagebelow.Chan
Today,theTowerofLondonisoneofthemostpopulartourist【C1】______andattractsoverthreemillionvisitorsayear.Itw
Itisapleasuretoseemenofacertainageworryingabouttheirweight.Listeningtothemisnotsuchapleasure.Becausethe
Cosmopolitanismisconcernedtodisclosetheethical,cultural,andlegalbasisofpoliticalorderinaworldwherepoliticalco
Researcherswhoareunfamiliarwiththeculturalandethnicgroupstheyarestudyingmusttakeextraprecautionstoshedanybia
“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
Publicspeakingfillsmostpeoplewithdread.Humiliationisgreatestfear;self-exposureandfailingtoappealtotheaudience
MaryBarramadehistorylastyearwhenshebecamethefirstwomantoleadthedevelopmentofnewcarsandtrucksatGeneralMoto
随机试题
狭义的债的变更是指()
确诊急性狼疮肾炎的主要依据是
肋骨骨折最易发生在
案例五:某工厂新进一批贵重仪器,价值1000万元。2011年3月31日与某保险公司签订了财产保险合同,保险金额为800万元,保险期限从2011年4月1日起至2012年3月31日止,并于当日缴付了全部保险费,同时该工厂保证24小时有专人看守。2012年1月2
等额本息还款法归还的本金和利息的配给比例是()变化的。
与其他筹资方式相比,普通股筹资的优点有()。
(2017年)2016年4月4日,甲公司从乙银行借款80万元,用于购置A型号自行车1000辆,借款期限自2016年4月4日至2016年6月4日,并以价值90万元的自有房屋一套为乙银行设定抵押,同时,乙银行与丙公司签订书面保证合同,约定丙公司为甲公司的借款承
怎样对企业盈利能力进行分析?
Agoodmodernnewspaperisanextraordinarypieceofreading.Itisremarkablefirstforwhatitcontains:therangeofnewsf
A、TheysendthemessagetothePresidentwithintendays.B、Theyofficiallystatereasonsforrejectingthemessage.C、Theymeet
最新回复
(
0
)