首页
登录
职称英语
Cells cannot remain alive outside certain limits of temperature, and much na
Cells cannot remain alive outside certain limits of temperature, and much na
游客
2025-04-06
14
管理
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】_________. [br] 【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://tihaiku.com/zcyy/4029408.html
相关试题推荐
Thepossibilitiesofanautumnelectioncannotbe______.A、struckoutB、leftout
It’saroughworldoutthere.Stepoutsideandyoucouldbreakalegslipping
It’saroughworldoutthere.Stepoutsideandyoucouldbreakalegslipping
Justoverayearago,Ifoolishlylockedupmybicycleoutsidemyoffice,bu
Ifsomethingverysubstantialisnotdonenextmonth,hecannot______hisoffice.
ThestaffofNormandyCrossingElementarySchooloutsideHoustoneagerlyawa
ThestaffofNormandyCrossingElementarySchooloutsideHoustoneagerlyawa
ThestaffofNormandyCrossingElementarySchooloutsideHoustoneagerlyawa
ThestaffofNormandyCrossingElementarySchooloutsideHoustoneagerlyawa
It’saroughworldoutthere.Stepoutsideandyoucouldbreakalegslippin
随机试题
HowtoReadLiteratureCritically?Readingcriticallydoesnotmeantearingawo
特别适用于描述具有百分比结构的分类数据的统计分析图是()A.散点图 B.圆形图
农村新型合作医疗制度的特点是什么?(每条1分,答对5条给满分)
孕妇,25岁,妊娠39周。上午8点开始阵发性宫缩,10点胎膜破裂,下午16时肛门
对于所谓"久病成医者",最适合采用何种模式()A.主动-被动型 B.
下列关于客户保证金存放的说法中,正确的是()。A.期货公司存管的客户保证金只能
下列各项中,属于制造成本的有()。A.汽车制造企业的轮胎外购成本 B.生
水利水电工程项目划分应结合()要求进行。A.工程结构特点 B.施工工艺 C
新生儿胆红素脑病早期的主要临床特征是A.体温升髙、体重减轻 B.呼吸困难、发绀
为确保职业健康安全管理体系和环境管理体系的持续适宜性、充分性和有效性,对组织的管
最新回复
(
0
)