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
2017-02-17
101
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."
【C11】
选项
A、after
B、throughout
C、since
D、till
答案
B
解析
本空格后的时间状语是that time,它指代the last 70 million years,而over加时间表示“在……期间”,所以此空格应填入一个与over用法一样的介词。因此选B项throughout“在整个……期间”。
转载请注明原文地址:https://www.kaotiyun.com/show/zkEZ777K
0
考研英语一
相关试题推荐
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
ForyearsAmericanconversationaboutIraqhasincludedarefrainabouthowwecannotexpecttocreateaJeffersoniandemocracy
随机试题
梅奥认为管理方法必须承担这样一种责任:
3H-TdR掺入法属于
直接数字化X射线摄影采用多少位的图像数字化转换
在上市辅导阶段,保荐人及其他中介机构应()。I.对拟上市企业进行尽职调查Ⅱ.帮助企业完善公司治理结构Ⅲ.明确业务发展目标和募集资金使用计划Ⅳ.准备首次公开发行申请文件
为了方便人们锻炼,小区里有大量体育锻炼设施。现在已经老化,带来安全隐患,你该怎么做?
请以“我看见一群年轻人横穿马路……想到此事,我的心情就很沉重”为背景编一个故事。
【C1】______thewayitfeels,lonelinessoftenhasnothingtodowithbeingalone.Forsomepeople,feelingsof【C2】______aresharp
下列属于“范围”的短语有
下列属于表单方法名(非事件名)的是( )。
有变量定义语句Dimmax,minAsString,则可以知道max的类型是
最新回复
(
0
)