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
2017-08-11
24
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."
【C20】
选项
A、extinct
B、dead
C、wrong
D、wild
答案
A
解析
连接词and说明前后两个半句是并列或顺接关系。后半句的内容是“很多大型动物在现代环境中灭绝的高风险”,而上段正是讨论动物灭绝的可能性,所以本句内容也应该与extinction相关。went extinct表示“灭绝”,故选择A项。
转载请注明原文地址:https://kaotiyun.com/show/6YbZ777K
0
考研英语一
相关试题推荐
Formanandwomenunder30,smokingdoesnotpreventtypicalage-relatedweightgain,accordingtoastudyofnearly4,000white
Somepublicationsthatrankschoolsandcollegessaytheydoittopromoteaccountability;otherssaytheydoittoprovideinfo
【F1】Toexplainwhysomecountriesgrowmorerapidlythanothersorwhyacountrymaygrowmorerapidlyduringoneperiodofhist
Expectationssurroundingeducationhavespunoutofcontrol.Ontopofaseven-hourschoolday,ourkidsmarchthroughhoursof
Optimistsoutlivepessimists,anewstudyshows.Ofnearly100,000women【C1】______intheWomen’sHealthInitiative,thosewhoga
Optimistsoutlivepessimists,anewstudyshows.Ofnearly100,000women【C1】______intheWomen’sHealthInitiative,thosewhoga
Optimistsoutlivepessimists,anewstudyshows.Ofnearly100,000women【C1】______intheWomen’sHealthInitiative,thosewhoga
Optimistsoutlivepessimists,anewstudyshows.Ofnearly100,000women【C1】______intheWomen’sHealthInitiative,thosewhoga
Optimistsoutlivepessimists,anewstudyshows.Ofnearly100,000women【C1】______intheWomen’sHealthInitiative,thosewhoga
随机试题
中度一氧化碳中毒血中COHb的含量为
某男性工人,主诉轻度运动后即感呼吸困难,无明显咳痰,体温正常,接尘工龄26年,诊断一期石棉沉着病。石棉沉着病的基本病理变化是
下列哪项不是急性白血病痰热瘀阻证的主症
背景西南安装工程公司承建某商场机电安装工程,由于业主急于开业,经业主同意,西南安装工程公司在没有进行防排烟系统测定和调整,竣工验收后即投入使用。在保修期内,该工程的计算机房由业主供的风机盘管的附件(冷冻水柔性接管)发生断裂而漏水,使建筑装修及计算
标准BOT项目融资形式是()。
以下所列,属于出境货物报检范围的有( )。
招股说明书中引用的财务报告在其最近1期截止日后6个月内有效。特别情况下发行人可申请适当延长,但至多不超过3个月。( )
甲上市公司为增值税一般纳税人,库存商品采用实际成本法核算,商品售价不含增值税,商品销售成本随销售同时结转。2014年3月1日,W商品账面余额为230万元,未计提存货跌价准备。2014年3月发生的有关采购与销售业务如下:(1)3月3日,从A公司采购W商品一
下列关于企业各层次的战略与所涉及的管理层次对应不正确的是()。
祥子想找个地方坐下,把前前后后细想一遍,哪怕想完只能哭一场呢,也好知道哭的是什么;事情变化得太快了,他的脑子已追赶不上。没有地方给他坐,到处是雪。小茶馆们已都上了门,十点多了;就是开着,他也不肯进去,他愿意找个清静的地方,他知道自己眼眶中转着的泪水随时可以
最新回复
(
0
)