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
70
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
[img]2012q1/ct_ecrbjm_ecrbjread_0574_20122[/img][br]Whatdoes"GSOH"mean?A、Ge
Interruption,moresurelythananythingelse,killsconversation.Thebesto
TheygiveActionManacertainruggednessandbestowinstanttestosterone(肾
Betterthinktwicebeforechoosingapasswordforemails,onlinebankaccoun
Youshouldspendabout20minutesonQuestions14-26whicharebasedonReading
说明:假定你是李明,根据以下内容以第一人称发一封电子邮件。内容:1.发件人:李明2.收件人:Linda3.发件人电子邮箱地址:liming2011@16
A.心 B.肺 C.脾 D.肝 E.肾属"阴中之阳"的脏是()
关于新型材料,下列说法错误的是:A.因为强度高,韧性好,石墨烯可用来制作柔性显示
A.硝普钠 B.布桂嗪 C.维拉帕米 D.尼群地平 E.地尔硫属于二氢吡
民用爆炸物品不包括( )。A.工业炸药 B.膨化炸药 C.起爆器材 D.专
最新回复
(
0
)