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
考研
Mammals vary enormously in size, from weighing less than a penny to measuring more than three school buses in length. Some group
Mammals vary enormously in size, from weighing less than a penny to measuring more than three school buses in length. Some group
admin
2022-01-04
47
问题
Mammals vary enormously in size, from weighing less than a penny to measuring more than three school buses in length. Some groups of mammals have become very large, such as elephants and whales,【C1】________others have always been small, like primates. A new theory developed by an international team, led by Jordan Okie,【C2】________an explanation for why and how【C3】________groups of organisms are able to evolve【C4】________sizes, whereas others are not.
The research team【C5】________information on how quickly an individual animal grows and used it to【C6】________how large it may get【C7】________evolutionary time. Their research was published recently.
The new theory developed from the observation that some animals【C8】________fast and die young, while others take their time and mature much later. "Fast" animals-such as mice—breed very quickly, while humans mature slowly and are relatively older when they first have children. The theory【C9】________that those species that are relatively faster are more likely to evolve a large size quicker than slow species, and that their maximum size will be greater.
The research team tested their theory using the【C10】________records of mammals over the last 70 million years, examining the maximum size of each mammal group【C11】________that time, including whales, elephants, seals and primates. They found that their theory was very well【C12】________.
"Primates have evolved very slowly, and never got bigger than 1,000 pounds," said Okie, "The【C13】________was true of whales, which evolved their large size at the fastest【C14】________recorded."
The theory also makes predictions about the relative risks of extinction for large animals【C15】________small. The maximum size of an animal is limited by the rate of mortality in the【C16】________. Because larger animals【C17】________breed less frequently than smaller animals,【C18】________the mortality rate doubles, the maximum size is predicted to be 16 times smaller.
"This is a really surprising【C19】________," said Okie. "It points to another reason why many of the large animals went【C20】________after the last Ice Age, and their high risk of extinction in modern environments."
【C16】
选项
A、quality
B、team
C、amount
D、population
答案
D
解析
空格前提到动物的最大体型受限于其死亡率(the rate of mortality)。死亡率是基于死亡的动物数目与其全体数量相比得出的数据。因此空格处所填之词应能指代该动物整体,故D项population“种群”为正确答案。A项quality“质量”与上下文语义无关。B项team“团队”不能指代该动物整体。C项amount指把所有数量归并在一起得出的总数。强调的是数目的多少。
转载请注明原文地址:https://kaotiyun.com/show/zoi4777K
0
考研英语二
相关试题推荐
WhentheAmericaneconomywasrunningfulltilttwoyearsago,fewplaceswereasbreathlesslydelightedasSeattle.Itsportwa
ThewriterwarnsAmericansthat______.Whatistheconclusionofthispassage?
Theheadmasterwarnedhimto______hiswaysifhewantedtostayattheschool.
ManyAmericansregardthejurysystemasaconcreteexpressionofcrucialdemocraticvalues,includingtheprinciplesthatallc
ManyAmericansregardthejurysystemasaconcreteexpressionofcrucialdemocraticvalues,includingtheprinciplesthatallc
IfAmericanmedicinewereapatient,hewouldweigh350poundsandbegainingfast.Despitebeingrepeatedlycounseledaboutthe
LouisArmstrongsang,"Whenyou’resmiling,thewholeworldsmileswithyou."Romanticseverywheremaybesurprisedtolearntha
In1784,fiveyearsbeforehebecamepresidentoftheUnitedStates,GeorgeWashington,52,wasnearlytoothless.Sohehireda
Atfirstglancethepatriarchyappearstobethriving.Morethan90%ofpresidentsandprimeministersaremale,asarenearlya
随机试题
Ofthetwosisters,Sarais(young)________one,andsheisalsotheonewholovestobequiet.
阅读《长恨歌》中的一段文字,回答问题。蜀江水碧蜀山青,圣主朝朝暮暮情。行宫见月伤心色,夜雨闻铃肠断声。天旋日转回龙驭,到此踌躇不能去。马嵬坡下泥土中,不见玉颜空死处。A.诗中“圣主”、“玉颜”分别指谁?B.这里表
金银花的主要成分不包括
细菌的侵袭力不包括
城市规划中“黄线”是指以下哪个控制界线?[2008年第12题]
期货公司未按期报送风险监管报表,中国证监会派出机构应当()。
应纳税额在人民币()元以下的船舶可以免征吨税。
导入的作用有哪些?以“friendship”为话题为高中课堂设计两种不同的导人方式并说明目的。
下图示意我国某山地的东坡和西坡的垂直带谱。读图完成下列问题。干旱河谷灌丛带所在的河谷终年盛行()。
Angerisanemotionthatcanbehardtocontrol.【C1】_____this,weshouldlearnhowtomanageangerinaconstructivemanner.In
最新回复
(
0
)