The assumption that the tropical ecosystem of Amazonia has been created solely by natural forces

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问题 The assumption that the tropical ecosystem of Amazonia has been created solely by natural forces

选项 A、has often been questioned by ecologists in the past.
B、has been shown to be incorrect by recent research.
C、was made by Peter Feinsinger and other ecologists.
D、has led to some fruitful discoveries.

答案B // has been shown to be incorrect by recent research

解析

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The assumption that the tropical ecosystem of Amazonia has been created solely by natural forces

雅思阅读

雅思（IELTS）

Foreachofthefollowingfunctions,givethedomainandadescriptionofthegraphy=f(x)inthexy-plane,includingitsshape

Forthecircle(x-l)2+(y+l)2=20inthexy-plane,findthefollowing.(a)Coordinatesofthecenter(b)Radius(c)Area

ThepopulationsofthefivemostpopulouscitiesintheUnitedStatesinApril2000arelistedinthetableabove.Thetotalpop

Thenumbersofpassengerson9airlineflightswere22,33,21,28,22,31,44,50,and19.Thestandarddeviationofthese9numb

A、AnassumptionbasedonevidencealreadypresentedB、Aconcessiontotheviewopposingthatoftheauthor’sC、Ahypothesisconc

ReadingtheepicknowntousastheIliadisvastlydifferentfromthe______experienceofhearingandseeingitperformed,fori

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Despitethefactthatthelifespanofanimalsisconvenientlydividedintoseparatestages,includingtheprenatal,adolescent,

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凡中华人民共和国公民,遵守国家法律、法规,已取得房地产经纪人协理资格,取得博士学位,从事房地产经纪业务工作满()年,可以申请参加房地产经纪人执业资格考试。

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防爆电气设备应有()标志。

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下列现象中，不能说明大气压存在的是()

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