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
0
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] 【C16】
选项
A、bottoms
B、lengths
C、depths
D、darkness
答案
C
解析
固定搭配。in the depths of the ocean是习惯搭配,意为“在深海区域”。与bottom搭配的介训是at。故答案为C。
转载请注明原文地址:https://tihaiku.com/zcyy/4029409.html
相关试题推荐
It’saroughworldoutthere.Stepoutsideandyoucouldbreakalegslipping
It’saroughworldoutthere.Stepoutsideandyoucouldbreakalegslipping
It’saroughworldoutthere.Stepoutsideandyoucouldbreakalegslipping
Justoverayearago,Ifoolishlylockedupmybicycleoutsidemyoffice,bu
ThestaffofNormandyCrossingElementarySchooloutsideHoustoneagerlyawa
ThestaffofNormandyCrossingElementarySchooloutsideHoustoneagerlyawa
It’saroughworldoutthere.Stepoutsideandyoucouldbreakalegslippin
It’saroughworldoutthere.Stepoutsideandyoucouldbreakalegslippin
It’saroughworldoutthere.Stepoutsideandyoucouldbreakalegslippin
Justoverayearago,Ifoolishlylockedupmybicycleoutsidemyoffice,bu
随机试题
Thoughhestartedlate,Mr.Wangplayedthepianoaswellas,if______,MissLi
“脾统血”指的是:A.脾为气血生化之源 B.脾气主升 C.脾气对血液具有固摄
除下列哪种情况应考虑妊娠合并心脏病并发早期心力衰竭的可能A.半夜胸闷需起床或到窗
下列抗菌药物,虽不易透过血脑屏障,但加大剂量能在脑脊液中达到治疗有效浓度且疗效满
抵御化脓性细菌感染的非特异性免疫细胞是A.单核细胞B.巨噬细胞C.中性粒细胞D.
共用题干 第一篇GrossNationalHappinessInthe
男性,56岁,头痛4个月,多见于清晨,常出现癫痫发作,经检查诊断为颅内占位性病变
某国在1973年时,人口总数达到687.43万人,到了2009年,该国人员已经
在战略风险评估中,应由专家审核的假设条件主要有()。A.公司的整体战略 B.
双盘法兰铸铁管常应用于()。A.室外给水工程 B.室外排水工程 C.水处理
最新回复
(
0
)