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
14
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."
【C15】
选项
A、compared to
B、referred to
C、dealt with
D、associated with
答案
A
解析
上下文多次提到大型动物与小型动物有哪些不同,因此所填入的词语应该能体现两者的对比。故选A项compared to“与……相比”。
转载请注明原文地址:https://kaotiyun.com/show/mYbZ777K
0
考研英语一
相关试题推荐
Somepublicationsthatrankschoolsandcollegessaytheydoittopromoteaccountability;otherssaytheydoittoprovideinfo
TheUnitedStateseconomyproducedroughly$15trillionworthofgoodsandservicesin2008,makingiteasilythelargestinthe
Mr.Porter,aprofessoratHarvardBusinessSchool,isoneoftheworld’smostrespectedbusinessthinkers.Hemadehisnameand
Recentyearshavebroughtminority—ownedbusinessesintheUnitedStatesnotonlyunprecedentedopportunitiesbutalsonewands
Recentyearshavebroughtminority—ownedbusinessesintheUnitedStatesnotonlyunprecedentedopportunitiesbutalsonewands
YouseeanadvertisementinanewspaperaboutanEnglishtrainingclass.Writealettertothetrainingschoolto1)introduc
Expectationssurroundingeducationhavespunoutofcontrol.Ontopofaseven-hourschoolday,ourkidsmarchthroughhoursof
Expectationssurroundingeducationhavespunoutofcontrol.Ontopofaseven-hourschoolday,ourkidsmarchthroughhoursof
Optimistsoutlivepessimists,anewstudyshows.Ofnearly100,000women【C1】______intheWomen’sHealthInitiative,thosewhoga
Optimistsoutlivepessimists,anewstudyshows.Ofnearly100,000women【C1】______intheWomen’sHealthInitiative,thosewhoga
随机试题
社会主义时期我国民族问题的实质是()
A.成人型多囊肾B.婴儿型多囊肾C.髓质海绵肾D.单纯性肾囊肿E.获得性肾囊肿病常染色体显性遗传型多囊肾
有关DSA的适应证,不正确的是
引起龋病发生的病源因素为
临床用于治疗哮喘的糖皮质激素药物有
方案创造常用的方法中,()先由熟悉的人进行审查,以提高效率。
下列有关中外合资经营企业与中外合作经营企业共同特点的表述中,不符合外商投资企业法律制度规定的有()。
下列对肯定性训练理解不正确的是()。
请根据新修改的《刑事诉讼法》的规定,判断下列选项属于中级人民法院管辖的案件是()。
TheCommissionisexpectedtoproposeallowingpeopletochoosewhichlegaljurisdictiontheywouldcomeunder,basedontheir【L
最新回复
(
0
)