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
10
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] 【C17】
选项
A、decided
B、regulated
C、controlled
D、changed
答案
B
解析
整体阅读本句,可知此处与后半句的表述是并列的,故regulated符合题意。
转载请注明原文地址:https://tihaiku.com/zcyy/3804318.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
【B1】[br]【B2】in→On/upon本题属于介词误用。“对…有影响”的正确表达是haveinfluenceon/uponsth.,本句意为:英
[originaltext]Listeningisoneofthefirstthingswelearntodo,andone
AirPollutionAirpollutionistypicallycau
左右心室认别的根据是A.乳头肌数目 B.心室内膜面粗糙或光滑 C.房室瓣数目
以下情况结核菌素试验出现假阴性,但应除外A.使用激素后 B.急性传染病后 C
散剂制备的一般工艺流程是A:物料前处理一粉碎一过筛一混合一分剂量一质量检查一包装
对班级授课制给予了系统的理论描述的著作是17世纪捷克教育家夸美纽斯的( )A.
下列关于增长型证券组合的说法中,正确的有()。 A.增长型证券组合以资本升值
下列集中趋势的测度中,适用于品质数据的是( )。A.简单算术平均数 B.众数
关于建筑室内给水排水管道安装的技术要求,正确的是( )。A.室内给水引入管与排
最新回复
(
0
)