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
2017-04-23
73
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.
【M10】
选项
答案
was—去掉was
解析
词汇错误。prove在表示“证明是,原来是”这一意思时,通常用在prove to be这一结构中,其中to be可以省略。例如:The rumor proved(to be)true.这谣传证明是真的。
转载请注明原文地址:https://www.kaotiyun.com/show/hgzK777K
0
专业英语八级
相关试题推荐
Inwhichkindofconversationstyledopeopletaketurnstogiveopinions?
BritishEducationalSystemI.PrimaryandsecondaryeducationinBritain1)Childrengotoprimaryschoolattheageof【B1】______
BritishEducationalSystemI.PrimaryandsecondaryeducationinBritain1)Childrengotoprimaryschoolattheageof【B1】______
BritishEducationalSystemI.PrimaryandsecondaryeducationinBritain1)Childrengotoprimaryschoolattheageof【B1】______
SurvivalofEnglishLanguageI.Introduction—Englishwidespreadinthe21stcentury—【B1】______show(s)howEnglishsurvived【B1
Thereturnofwolvesbenefitsthegrizzlybearsbecause______.
Accordingtotheinterviewer,whatattitudedomostyoungpeopleholdtowardskeepinghealthy?
Itseemstometherearetwoaspectstowomen.Thereisthedemureandthedauntless.Menhavelovedtodwell,infictionatlea
Itseemstometherearetwoaspectstowomen.Thereisthedemureandthedauntless.Menhavelovedtodwell,infictionatlea
WaltWhitmanhelpedtopromotethedevelopmentof
随机试题
关于西咪替丁,下列哪项不正确
A.附子理苓汤B.柴胡疏肝散C.一贯煎D.实脾饮鼓胀之寒湿困脾证,宜选用
住院儿童出现分离性焦虑最明显的年龄阶段是
A.急则治其标B.缓则治其本C.标本同治D.先扶正后祛邪E.先驱邪后扶正臌胀见二便不利治疗应选()
执法为民要求立法、行政、司法等机关的工作要反映群众的愿望和根本利益。下列哪一做法没有准确体现执法为民的基本要求?(2014年卷一第5题,单选)
判断一个行为是不是具体行政行为就看它是否具备()。
投产竣工阶段的主要内容包括()。
计算机能直接识别并执行的语言是()。
【2013.山西孝义】“活到老学到老”是现代教育__________特点的体现。
Healthimpliesmorethanphysicalfitness.Italsoimpliesmentalandemotionalwell-being.Anangry,frustrated,emotionally【C1
最新回复
(
0
)