The availability of carbon dioxide is an essential(i)for plant life, while oxygen is equally(ii)for animal life.

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问题 The availability of carbon dioxide is an essential(i)______for plant life, while oxygen is equally(ii)______for animal life.

选项

答案C,F

解析 The best answer is C and F. If something is "essential," it is unlikely to be either a choice or a luxury. Therefore, "condition" is the best answer for Blank(i). Blank(ii)must echo this idea, because of the adverb "equally." Consequently, "necessary" is the best choice for Blank(ii).

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本试题收录于： GRE VERBAL题库GRE分类

GRE VERBAL

GRE

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The availability of carbon dioxide is an essential(i)______for plant life, while oxygen is equally(ii)______for animal life.

GRE VERBAL

GRE

SpeakerA:Hereareourticketsandpassports.We’reflyingtoAmsterdamtoday.SpeakerB:WelcometoYouth.Let’ssee...ye

Toimprovethe______isregardedasagoodmethodtoincreasethefarmer’sincomeinthesouthpartofthecountry.

Normallyastudentmustattendanumberofcoursesinordertograduate,andeachcoursewhichheattendsgiveshimagradewhic

SpeakerA：So,what’sthestatusofouradvertisingcampaign?SpeakerB：AsImentionedbefore,it’llbeanationalcampaignstart

Weallknowthatitispossibleforordinarypeopletomaketheirhomesontheequator,althoughoftentheymayfeeluncomfortab

Asmileisastrongsignofafriendlyandopenattitudeandawillingnesstocommunicate.Itisapositive,silentsignsentwi

Nowadays,especiallyinChina,everythingseemstofavorsocialintercourse,suchasgatheringsoffriends,KTV,grouptravel,d

Whichofthefollowingmostaccuratelystatesthemainideaofthepassage?ThepassagesuggeststhatJarvis’workhascalledi

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急进型高血压时，增生性小动脉硬化及坏死性细动脉炎主要发生于

新孢子虫的终末宿主是()。

患者，女，44岁。月经紊乱一年多，阵发性潮热，腰膝酸软，头晕耳鸣。针灸时以

膀胱肿瘤最常见的临床表现是

道路交通量达到饱和状态时，快速路、主干道的道路设计年限为()。

2011年7月10日，东方公司收到投资者王华投入的一台不需安装的新机器，用于东方公司制造甲产品。投资合同约定：该机器作价50000元。假定不产生溢价，则东方公司收到该机器时应当编制的会计分录是()。

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A、慌慌张张B、丢三落四C、勤劳勇敢D、认真刻苦B根据“你的手机是不是又没带”这句话，可知女的平时爱落东西，所以选B。

The availability of carbon dioxide is an essential(i)for plant life, while oxygen is equally(ii)for animal life.