A mare basin is. Sialic material refers to.

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问题 A mare basin is______.
Sialic material refers to______.

选项 A、the broken,rock resulting from the impact of a meteorite against the earth
B、material that exists on planets other than the earth
C、a composite of rock typical of continental areas of the earth
D、material that is man-made to simulate materials that existed far back in geological history

答案C

解析细节理解。在文章的第三段第三句："举例说，Donn et al．提出大陆区域那般大的、硅铝结构的天体撞击形成最初的大陆块的设想"。说明地球大陆地区特有的岩石构成。而其他三项文章并没有提及。

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考研英语一

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A mare basin is______. Sialic material refers to______.

考研英语一

Thecorporateworldisincreasinglyrejectingimperialchiefexecutivesinfavourofanonymousmanagers—prudentandboringmena

Perhapsthemostambitiouslong-termhealthstudyeverplannedbytheNationalInstitutesofHealth(NET)hasbeenhitbyaNASAs

Teenagersarespendingmoremoneythanever.Justlastyear,31.6millionteensspent155billion,accordingtotheNorthbrook,

Googlemustbethemostambitiouscompanyintheworld.Itsstatedgoal,"toorganizetheworld’sinformationandmakeituniver

ReadthefollowingtextandanswerthequestionsbychoosingthemostsuitablesubtitlefromthelistA-Gforeachnumberedpara

Youaregoingtoreadalistofsubheadingsandatext.Choosethemostsuitablesubheadingfromthelist[A]to[G]foreachnu

RunningfortheofficeofthePresidentoftheUnitedStatesisexceptionallyarduousandshouldnotbeundertakenbythe【C1】___

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Peopleusedtothinkthatlearningtwolanguagescreatedconfusioninthemind.Far【C1】________itwasthought,togetone

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A mare basin is. Sialic material refers to.