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
外语
The binary planet hypothesis—that Earth and the Moon formed simultaneously by the accretion of smaller objects—does not explain
The binary planet hypothesis—that Earth and the Moon formed simultaneously by the accretion of smaller objects—does not explain
admin
2015-06-25
75
问题
The binary planet hypothesis—that Earth and the Moon formed simultaneously by the accretion of smaller objects—does not explain why the Moons iron core is so small relative to the Moons total volume, compared with Earth’s core relative to Earths total volume. According to the giant-impact hypothesis, the Moon was created during a collision between Earth and a large object about the size of Mars. Computer simulations of this impact show that both of the objects would melt in the impact and the dense core of the impactor would fall as molten rock into the liquefied iron core of Earth. The ejected matter—mantle rock that had surrounded the cores of both objects—would be almost devoid of iron. This matter would become the Moon.
Which of the following best describes the organization of the passage?
选项
A、The development of one theory into another is outlined.
B、Two explanations are provided, both of which are revealed as inadequate.
C、A theory is presented, and then evidence that undermines that theory is discussed.
D、Similarities and differences between two theories are described.
E、A flawed hypothesis is introduced, and then an alternative hypothesis is presented.
答案
E
解析
The passage begins by presenting the binary planet hypothesis about the formation of Earth and the Moon and claiming that the hypothesis fails to explain the disparity in the sizes of Earths iron core and the Moon’s iron core relative to their volumes. The passage then introduces an alternative—the giant-impact hypothesis—and argues that this alternative explains the disparity better. Thus, Choice E is correct. The second theory is not presented as having been developed out of the first, so Choice A is incorrect; only the first theory is revealed as inadequate, so Choice B is incorrect; and the two theories are not compared extensively, so Choice D is incorrect. Although "a theory[the binary planet hypothesis]is presented, and then evidence that undermines that theory[the disparity related to iron cores]is discussed," that description fails to capture the organization of the passage as a whole, so Choice C is incorrect.
转载请注明原文地址:https://kaotiyun.com/show/fujO777K
本试题收录于:
GRE VERBAL题库GRE分类
0
GRE VERBAL
GRE
相关试题推荐
Longbusridesareliketelevisionshows.Theyhaveabeginning,amiddle,andanend—withcommercialsthrownineverythreeor
Student:ImeanIwanttodosomeoftheseproblems.Teacher:Yeah.Student:Butit’stakingtimetodothem.Teacher:
Weallknowthatitispossibleforordinarypeopletomaketheirhomesontheequator,althoughoftentheymayfeeluncomfortab
Ifcubicalblocksinadisplayarestackedoneontopoftheotheronaflatsurface,whatisthevolumeofthestackofblocks
MosteconomistsintheUnitedStatesseemcaptivatedbythespellofthefreemarket.Consequently,nothingseemsgoodornormal
In1977theprestigiousEwhaWomen’sUniversityinSeoul,Korea,announcedtheopeningofthefirstwomen’sstudiesprogramin
Acommonmisconceptionisthatuniversityhospitalsarebetterthancommunityorprivatehospitals.Infact,universityhospital
Psychologicalmaladjustmentinchildreniscausedbythestressofthebirthingprocessasisprovedbythediscoveryofaposit
ThePlanningCommitteehasdecidedinfavorofredevelopingthecity’swesterndistrictandhasissuedareportthatarguesfor
ThenumberofwomendirectorsappointedtocorporateboardsintheUnitedStateshasincreaseddramatically,buttheratiooffe
随机试题
试述合同法律适用的一般理论与合同准据法的历史发展。
精益生产方式结构体系的三大支撑为()①零库存②多品种③零缺陷④高效率⑤低成本
男性,55岁。有慢性支气管炎病史10多年,1周来高热,咳嗽、咳痰加重,痰液黏稠呈砖红色胶冻状。为明确诊断,下列何种检查最有价值
行政法的渊源多种多样,下列不是行政法渊源的是()。
某工厂购买一台国产机器,原价为1000万元,购置费为1250万元,则该设备运杂费率为()。
下列()是九江市内现存最大的古建筑群。
承运人未按照约定路线或者通常路线运输增加票款或者运输费用的,旅客、托运人或者收货人可以拒绝支付增加部分的票款或者运输费用。
在数据库物理设计阶段,建立索引的目的是为了提高数据的——。
Usingtheinformationinthetext,completeeachsentence14-18,withawordorphrasefromthelistbelow.Foreachsentenc
IsraelandHamashadreachedadealonextendingthe________ceasefirebyanextra24hoursuntilTuesdayatmidnight.
最新回复
(
0
)