首页
登录
职称英语
Because dinosaurs were reptiles, scientists once assumed that, like all reptiles
Because dinosaurs were reptiles, scientists once assumed that, like all reptiles
游客
2024-01-13
10
管理
问题
Because dinosaurs were reptiles, scientists once assumed that, like all reptiles alive today, dinosaurs were coldblooded. The recent discovery of dinosaur fossils in the northern arctic, however, has led a number of researchers to conclude that at least some dinosaurs might have been warmblooded. These researchers point out that only warm-blooded animals could have withstood the frigid temperature that are characteristic of arctic winters, whereas cold-blooded animal would have frozen to death in the extreme cold. Which one of the following, if true, weakens the researchers’ argument?
选项
A、Today’ s reptiles are generally confined to regions of temperate or even tropical climates.
B、The fossils show the arctic dinosaurs to have been substantially smaller than other known species of dinosaurs.
C、The arctic dinosaur fossils were found alongside fossils of plants known for their ability to withstand extremely cold temperatures.
D、The number of fossils found together indicates herds of dinosaurs so large that they would need to migrate to find a continual food supply.
E、Experts on prehistoric climate conditions believe that winter temperatures in the prehistoric northern arctic were not significantly different from what they are today.
答案
D
解析
读题以后不难发现本题的结论是以史前时代北极地区的气温与今天的相比无明显差别以及化石被科学家们在北极发现的恐龙生前就一直栖息在北极为前提.选项(D)通过找他因,削弱了本题结论的前提,因此(D)是正确答案;(E)对结论构成支持;(A)、(B)和(C)均为无关选项。
转载请注明原文地址:https://tihaiku.com/zcyy/3358611.html
相关试题推荐
ThepeopleatthepartywereworriedaboutJohnbecausenoonewasaware_______
Itwasbecauseitrainedheavilylastnight________hedidn’tcometotheevening
Someconceptsmaybedifficulttograspchieflybecausetheymaybeunfamiliaro
Itwasonceassumedthatalllivingthingscouldbedividedintotwofundamental
Ourcriminaljusticesystemisinherentlyflawedbecauseitreliesonamateurju
WhenA.PhilipRandolphassumedtheleadershipoftheBrotherhoodofSleepin
WhenA.PhilipRandolphassumedtheleadershipoftheBrotherhoodofSleepin
WhenA.PhilipRandolphassumedtheleadershipoftheBrotherhoodofSleepin
Itwasonceassumedthatalllivingthingscouldbedividedintotwofundame
Itwasonceassumedthatalllivingthingscouldbedividedintotwofundame
随机试题
IntheUS,theredoesnothavetobeany【B1】______reasonforaparty.Often
In2004,theAuburnHousingAuthoritybecamethefirstauthorityinMainean
Themanmakesareservationfinallyfor[originaltext]W:Hello.SunnysideInn.M
Complainingaboutfaultygoodsorbadserviceisnevereasy.Ifsomethingyo
A.安氏Ⅰ类 B.安氏Ⅲ类 C.安氏Ⅱ类 D.安氏Ⅳ类 E.安氏Ⅴ类双侧
唐代前期是修史的“黄金时期”,相继问世了八部断代史书,号称“唐修八史”。下列选项
某公司的流动比率是1.9,如果该公司用现金偿还部分应付账款。那么该公司的流动比率
设A站至B站里程为2084公里,根据所用运行图,每日开行某列车一对,列车编组18
隧道竣工测量后一般要求提供的图表有()。A.坡度表 B.断链表 C.里程表
常用于手术器械灭菌的是 A巴氏消毒法B高压蒸气灭菌法C干烤法D紫外线照射
最新回复
(
0
)