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
2023-11-15
11
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] 【C9】
选项
A、With
B、Like
C、As
D、Being
答案
C
解析
分析分句之间的关系可知,此处需要表示因果关系的连词。with和like都是介词,being在主从句中主语一致的情况下才可引导原因分句,且此处需要的是连词,因此只有C正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3189748.html
相关试题推荐
Celebrityworshipisnowintherisingandsomeyoungsterscannotresistjump
Asoneoftheyoungestprofessorsintheuniversity,Longfellowiscertainlyon
Clothingmadeofplasticfibershascertainadvantagesover______madeofnatur
Generallyspeaking,______immigrantscannottotallycutthetiewiththeirmoth
AfterwatchingthatmovieabouttheAnti-JapaneseWar,peoplecannothelpbut__
Sheremainsconfidentand______untroubledbyourpresentproblems.A、indefinite
Ourscientificfindingscannotberegardedas______insuchashortperiodoft
Somepeopleeither______avoidquestionsofrightandwrongorjustremainneut
Generallyspeaking,______immigrantscannottotallycutthetiewiththeirmoth
Certainlynocreatureintheseais【C1】______thanthecommonseacucumber.A
随机试题
糖炒栗子在秋季和冬季到来的时候,糖炒栗子正是这个时节的美味。配方是这样的。选择优良的栗子。把它
根据国际粮农组织和世界卫生组织的建议,中国居民膳食碳水化合物的参考摄入量为占总能
主张“教育事业应该是公共的,而不是私人的”的学者是()A.柏拉图 B.亚里士
在LunDh试验中,标准餐后十二指肠液中胰蛋白酶浓度小于何值为胰功能不全A.6U
下列各项工作中,属于施工阶段业主方项目管理工作的是()。A.组织施工难
某天然地基的场地土为稍密的细砂,经深宽修正后的地基静力承载力特征值为180kPa
腹痛于躯体前屈时明显,而直立位时减轻的是A.胃黏膜脱垂 B.反流性食管炎 C
根据资源税法律制度的规定,下列各项中,不属于资源税征税范围的是()。A.人造石
某工程双代号时标网络计划执行至第20天和第60天时,检查实际进度如下图前锋线所示
下列开挖地质中,施工前不需要安全风险评估的是( )。A.开挖深度25m的岩
最新回复
(
0
)