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
2025-02-26
48
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/3973173.html
相关试题推荐
Becausedinosaurswerereptiles,scientistsonceassumedthat,likeallreptiles
Agroupofscientistsstudyingcalciummetabolisminlaboratoryratsdiscovered
Onlycomputerscientistsunderstandthearchitectureofpersonalcomputers,and
Becauseyoungchildrendonotorganizetheirattentionorperceptionssystematic
Becausenaturalgasiscomposedmostlyofmethane,asimplehydrocarbon,vehicle
MostLargecompaniesprefercustomizedcomputersoftwarebecauseitcanbemolde
Becausetheenemy’snewshipisthequietestanditisthereforethemostelusiv
SchooldesegregationhasworkedwellinBuffalo,NewYork,inpartbecauseparen
TheRorschzchtestisgainingnewrespectasadiagnostictoolbecauseittakes
Ahugeflyingreptilethatdiedoutwiththedinosaurssome65millionyearsago
随机试题
TherearemanytheoriesaboutthebeginningofdramainancientGreece.Theone
Inthecanonicalwritingoftheculturalessentialists,languagehas
Artcanbemadeofalmostanything,includingsubstances【M
Howcanyoutellthedifferencebetweenaproblemthatwillgoawayonitso
Parents’Homework:FindPerfectTeachersforKidsA)TomiHalldidw
冷热电三联供系统一般由动力系统、燃气供应系统以及下述哪些系统构成?()A.供
(2020年真题)下列关于完全垄断市场的说法中,错误的是( )。A.完全垄断市
A.以花朵完整,颜色鲜艳,气清香,少梗者为佳B.以花冠长,色红而鲜艳,无枝刺,质
能够祛风胜湿止痛的药组是A:防风,独活,桂枝B:防风,藁本,羌活C:羌活,紫
共用题干 患者女性,35岁。因下腹疼痛3天就诊。自述1周前曾在当地卫生院行经阴
最新回复
(
0
)