首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective func
Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective func
admin
2019-08-16
31
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.
【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://kaotiyun.com/show/5TbK777K
0
专业英语八级
相关试题推荐
Single-sexSchoolI.【T1】______【T1】______—Co-ed:the【T2】_____ofsexes,politicallyacceptable【T2】______II.Research—Single-
Single-sexSchoolI.【T1】______【T1】______—Co-ed:the【T2】_____ofsexes,politicallyacceptable【T2】______II.Research—Single-
HowtoWriteChildren’sLiterature?TheauthorofDannytheDragonMeetsJimmyissharingsomeofherthoughtsabouttheimporta
PreventingCrossCulturalMiscommunicationMiscommunicationshappenallthetimebetweenpeoplewhosenativelanguagesarediffe
PreventingCrossCulturalMiscommunicationMiscommunicationshappenallthetimebetweenpeoplewhosenativelanguagesarediffe
Themostconsistentlyidentifiedteachereffectivenessvariableistimeontask.Thatis,themoretimethatstudentsspendon
Themostconsistentlyidentifiedteachereffectivenessvariableistimeontask.Thatis,themoretimethatstudentsspendon
Probablyforaslongastherehavebeensalesforces,managershavesoughtwaystodeterminewhethertheyareeffectiveornot.
Probablyforaslongastherehavebeensalesforces,managershavesoughtwaystodeterminewhethertheyareeffectiveornot.
随机试题
就这个方法本身而言,它值得一试。
下列关于吸附法的叙述,说法错误的是()。
风险识别工作不包括()。
甲企业(增值税一般纳税人)为某市一家酒厂,生产各种酒类产品。2014年2月,甲企业发生下列经营业务:(1)向乙企业销售白酒80吨,取得不含税销售收入400万元,另单独收取包装费37万元。向个人零售白酒5吨,取得销售额11.7万元。(2)
教师的“楷模"“榜样”“引路人”的角色,都充分说明了教师的劳动具有()
近年来,国家财政把支持解决“三农”问题放在财政工作的首要位置,从()城乡发展的战略高度出发,不断加大投入力度,目前已经初步()财政支持“三农”资金稳定增长机制。
2015年全年全国粮食总产量62143万吨,增长2.4%。谷物产量57225万吨,比上年增长2.7%。棉花产量560.5万吨,比上年下降9.3%。全年猪牛羊禽肉产量8454万吨,比上年下降1.0%,其中猪肉产量5487万吨,下降3.3%,而上年同期为增长3
火:热情:态度
农业示范基地
若f(x)=在x=0处连续,则a=______.
最新回复
(
0
)