首页
登录
职称英语
The binary planet hypothesis—that Earth and the Moon formed simultaneously by th
The binary planet hypothesis—that Earth and the Moon formed simultaneously by th
游客
2025-02-21
8
管理
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. [br] 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://tihaiku.com/zcyy/3966322.html
相关试题推荐
Thebinaryplanethypothesis—thatEarthandtheMoonformedsimultaneouslybyth
Scientistsformerlybelievedthattherockyplanets—Earth,Mercury,Venus,andM
Heractionsdidnothingbutgood,butsincesheperformedthemoutofself-inter
MagicianHarryHoudiniperformedspectacularfeatsofescapesoastoundingthat
ThetwoastronomerswhosimultaneouslydiscoveredCometHale-Boppwere______:in
The(i)______ofthescientist’srebuttalofthehypothesiswasstartlingevenin
Balladsoftenpraisepopularfigureswhohaveperformedfeatsthatmanyperceive
Forcenturies,Marshasbeencalledthe"RedPlanet",butthedesignationis____
Thereissome____thefactthattheauthorofabookassensitiveandinformed
ThattheThirdBattalion’sfifty-percentcasualtyratetransformeditsassaulto
随机试题
[originaltext]W:Howareyougettingon,White?AreyoustillworkingfortheM
Formanyyoungadultsembarkingontheiruniversityorcollegecourses,reading
Someyoungsoldierswhohadrecentlyjoi
结构化分析方法是一种预先严格定义需求的方法,它在实施时强调的是分析对象的()。
A.苍术川芎 B.苍术厚朴 C.苍术白术 D.苍术羌活 E.苍术黄柏越鞠
基金公司在交易执行环节可能存在的风险包括()。 Ⅰ.未践行最佳执行原则,交易
抗HIV抗体阳性确证试验常用免疫印迹法,下列检测结果可判断为抗HIV抗体阳性的是
电压互感器的二次绕组严禁()A.开路运行 B.短路运行 C.负载是容
女性,45岁。发热、咳脓痰1周,胸片右下背段浸润阴影。用青霉素治疗体温稍下降,但
流动性风险是()长期积聚、恶化的综合作用结果。 A.信用风险B.汇率风险
最新回复
(
0
)