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 funct
Cells cannot remain alive outside certain limits of temperature, and much narrower limits mark the boundaries of effective funct
admin
2012-07-22
46
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】______ .
【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://kaotiyun.com/show/dlmK777K
0
专业英语四级
相关试题推荐
Thebesttitleforthispassageis______.Whichofthefollowingstatementsisnottrueaccordingtothepassage?
Peoplethinkingabouttheoriginoflanguageforthefirsttimeusuallyarriveattheconclusionthatitdeveloped【C1】______as
DolphinsDolphinsaresocialanimals./Manyofthemevenenjoybeingaroundhumans./Inadditiontobeingplayful,theyarehelpfu
Giventhelackoffitbetweengiftedstudentsandtheirschools,itisnotsurprisingthatsuchstudentsoftenhavelittlegood
EightforeignaidworkerswerearrestedinAfghanistanbecauseoftheir______activities.
IfIhadremembered______thewindow,thethiefwouldnothavegotin.
Federaleffortstoaidminoritybusinessesbeganinthe1960’swhentheSmallBusinessAdministration(SBA)beganmakingfederal
Peoplesometimeswonderabouthowtoensurefamily’sfinancialwell-being.Fora【C1】______varietyofpurposes,familyfinancial
Peoplesometimeswonderabouthowtoensurefamily’sfinancialwell-being.Fora【C1】______varietyofpurposes,familyfinancial
Thegovernment’s______ofsendingitstroopstoIraqlastweektriggeredmassdemonstrationsinthisWesterncountry.
随机试题
各级政府投资主管部门要加强对企业投资项目的()监督检查。
采用EPC模式时,业主要更换业主代表,需提前()天通知承包商。
管道系统根据不同的使用要求进行系统试验,系统试验的方法不包括()。
下列哪些属于合同履行的原则?()。
1,3,6,10,15,()
社区文化的主体是()。
阅读下面这首诗,完成试题。岁暮①杜甫岁暮远为客,边隅还用兵。烟尘犯雪岭②,鼓角动江城。天地日流血,朝廷谁请缨?济时敢爱死?寂寞壮心惊!【注】①本诗作于唐代宗广德元年(763)末,
中国社会科学院发布的《经济蓝皮书》指出,目前为了顺利推进我国城市化的发展,特别是更好地使住宅业成为新一轮的经济周期的重要支柱产业,就必须有效地解决房价不断上涨的问题。这个问题解决不好,将会严重影响城市化的发展,甚至影响社会安定。我国住宅业的发展经历了三个阶
假设用一个长度为50的数组(数组元素的下标为0~49)作为栈的存储空间,栈底指针bottom指向栈底元素,栈顶指针top指向栈顶元素,如果bottom=49,top=30(数组下标),则栈中具有()个元素。
Quasars,atbillionsoflight-yearfromEarththemostdistantobservableobjectsintheuniverse,believedtobethecoresofg
最新回复
(
0
)