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
19
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] 【C16】
选项
A、bottoms
B、lengths
C、depths
D、darkness
答案
C
解析
本句意为:此外,生活在深海区域中的许多无脊椎动物绝不会在刺骨的冷水中体验到温度的变化,它们的体温也会保持恒定。in the depths of the ocean 是习惯搭配,意为“在深海区域”。与bottom搭配的介词是at,如:Who is at the bottom of these rumors?(谁是谣言的制造者?)
转载请注明原文地址:https://tihaiku.com/zcyy/3804317.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
Wehaveacrisisonourhands.Youmeanglobalwarming?Theworldeconomy?N
Allofusinresearchhavefocusedonadrugthatisso______thatitcanchange
巴比妥类药物急性中毒时静脉滴注碳酸氢钠的目的是:A.中和巴比妥类使其毒性降低
女性,29岁,已婚。孕8个月,头晕头痛,耳鸣作响,心悸怔忡,夜寐多梦,舌红,少苔
现金流量分析的具休内容包括下列各项中的()。 Ⅰ.投资收益分析 Ⅱ.收益质
功能拔毒去腐的药是()。A.朱砂B.升药C.大蒜D.土荆皮E.硫黄
党的十六大报告指出,发展经济的根本目的是()。A.增强国力 B.提高全国
对EPQ描述正确的是()。 A.可适用于团体测量 B.可适用于个体测量 C
在建设工程设计合同的履行中,属于发包人责任的有()。 A.对勘察资料的正确性
从事建筑活动的建筑业企业,应当具备下列选项中除()以外的法定条件。A.有符合规定
最新回复
(
0
)