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
17
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
Whensupplyexceedsdemandforanyproduct,pricesare______tofall.A、timelyB
ResearchersreportthatobesityrelatestoDNA.Somechildrengetobese【C1】_
压力表损坏或压力表进水管路堵塞会导致湿式报警阀阀前阀后压力表显示不同。
第1胎,41周妊娠,头浮,试产4h,宫缩50s/2~3min,胎心132次
材料:下面是陈老师设计的“大洲和大洋”一课的教学目标: (1)了解世界海陆分布
某委托监理的工程,施工合同工期为20个月,土方工程量为28000m3,土方单价为
在PowerPoint中,能同时观看到多张幻灯片设计效果的“视图”的是()。A
宏观经济政策的主要目标包括充分就业、价格稳定、经济增长和国际收支平衡。( )[
商业银行风险管理的主要策略是风险分离、风险缓解、风险转嫁、风险规避、风险赔偿。(
银行业自律组织的章程应当报国务院银行业监督管理机构备案。
最新回复
(
0
)