首页
登录
职称英语
Cells cannot remain alive outside certain limits of temperature and much na
Cells cannot remain alive outside certain limits of temperature and much na
游客
2023-11-27
44
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 with a narrow range around 37℃; a departure【M1】______
of a few degrees from this value serious impairs their functioning.【M2】______
Even though cells can survive wider fluctuations the integrated
actions of bodily systems are impaired. Other animals have a wide【M3】______
tolerance for changes of bodily temperature.
For century it has been recognized that mammals and birds【M4】______
differ other animals in the way they regulate body temperature.【M5】______
Ways of characterizing the difference have become more accurate
and meaningful over time, but popular terminology still reflects an【M6】______
old division into " warm-blooded" and " cold-blooded" species;
warm-blooded included mammals and birds whereas all other
creatures were considered cold-blooded. As more species were
studied, it became evident that this classification was adequate. A【M7】______
cold-blooded fence lizard usually has a body temperature only a
degree or two below those of humans and so is not cold. Therefore【M8】______
the next distinction was taken between animals that maintain a【M9】______
constant body temperature, called homeotherms, and those whose
body temperature varies with their environments, called
poikilotherms. But this classification was also proved inadequate,【M10】______
because among mammals there are many that vary their body
temperatures during hibernation. Furthermore, many invertebrates
that live in the depths of the ocean never experience change in the
depths of the ocean, and their body temperatures remain constant. [br] 【M4】
选项
答案
century一centuries
解析
词汇错误。For centuries是固定短语,意为“几个世纪以来”。
转载请注明原文地址:https://tihaiku.com/zcyy/3222433.html
相关试题推荐
(1)ThejammedparkinglotoutsideMuirWoodsisproofthatthisstandofold
(1)Atacertainseasonofourlifeweareaccustomedtoconsidereveryspot
(1)Atacertainseasonofourlifeweareaccustomedtoconsidereveryspot
(1)Atacertainseasonofourlifeweareaccustomedtoconsidereveryspot
IcametoAfricawithonepurpose:Iwantedtoseetheworldoutsidethepe
IcametoAfricawithonepurpose:Iwantedtoseetheworldoutsidethepe
IcametoAfricawithonepurpose:Iwantedtoseetheworldoutsidethepe
IcametoAfricawithonepurpose:Iwantedtoseetheworldoutsidethepe
IcametoAfricawithonepurpose:Iwantedtoseetheworldoutsidethepe
IcametoAfricawithonepurpose:Iwantedtoseetheworldoutsidethepe
随机试题
Theinterview—about3minutesInthispartinterlocutorasksquestionstoeacho
Dostrongelectriccurrents,bymeansoftheelectromagneticfieldsthataccompa
theinvestorwhoisuncertainaboutthefutureismorelikelytoputmoneyinto
[img]2012q1/ct_etoefm_etoefspeakc_0118_20121[/img]Describethewoman’sprobl
Latelyithasbecomepopulartorejecttheadviceofdrinkingeightglasses
在糖尿病筛检中检测血糖的目的是()A.查出隐性的糖尿病患者 B.查出糖耐量减
急性肝炎时,LD同工酶的特点是A.LD3↑ B.LD1↑ C.LD4↑ D
A.国家基本药物 B.上市药品 C.处方药 D.仿制药品 E.国家基本药
下列关于房地产价格影响的表述中,正确的是()。A.在卖方市场下,增加卖方的
根据《污水综合排放标准》,以下允许在排污单位排放口采样的污染物是( )。A.总
最新回复
(
0
)