首页
登录
职称英语
Cells cannot remain alive outside certain limits of temperature, and much n
Cells cannot remain alive outside certain limits of temperature, and much n
游客
2024-10-16
45
管理
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 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 bodily 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 blood- ed " 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] 【C2】
选项
A、difference
B、change
C、gap
D、departure
答案
D
解析
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D的departure与impair最搭配,departure在这里表示“脱离常规”。
转载请注明原文地址:https://tihaiku.com/zcyy/3804303.html
相关试题推荐
Cellscannotremainaliveoutsidecertainlimitsoftemperature,andmuchn
Cellscannotremainaliveoutsidecertainlimitsoftemperature,andmuchn
Cellscannotremainaliveoutsidecertainlimitsoftemperature,andmuchn
Cellscannotremainaliveoutsidecertainlimitsoftemperature,andmuchn
Cellscannotremainaliveoutsidecertainlimitsoftemperature,andmuchn
Cellscannotremainaliveoutsidecertainlimitsoftemperature,andmuchn
Cellscannotremainaliveoutsidecertainlimitsoftemperature,andmuchn
Cellscannotremainaliveoutsidecertainlimitsoftemperature,andmuchn
Cellscannotremainaliveoutsidecertainlimitsoftemperature,andmuchn
Cellscannotremainaliveoutsidecertainlimitsoftemperature,andmuchn
随机试题
Shewouldhavebeenmoreagreeableifshehadchangedalittlebit,______?A、had
It’shightimewe_______cuttingdowntherainforests.A、stoppedB、hadtostopC
Thereisonepartofwomen’smagazinesthateverymanreads.Itisthesect
Thedisturbanceofthesoulcannotbeendednortruejoycreatedeitherbythep
[originaltext]M:Ohhi,Ann.Howhaveyoubeen?Andhow’syournewapartmentwo
1928年担任杭州国立艺专校长的()首先在艺专建立了“实用美术系”设置了商标、广
下列关于全陪接团后首次讲解内容的说法中,错误的是()。A.介绍地陪 B.致欢迎
关于沙丁胺醇的平喘作用原理,下列哪项是错误的:A.主要刺激β2肾上腺素能受体
ThiscertificateLsvalid()60days.
(2021年真题)某公司产销一种产品,变动成本率为60%,盈亏平衡点作业率为70
最新回复
(
0
)