托福tpo模考软件下载【一键安装】.docx

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托福tpo模考软件下载【一键安装】
摘要：托福tpo模考软件下载，托福TPO里面的真题全部是过去曾经考过的托福真题，在我们托福备战过程中起到非常重要的作用，吃透托福TPO能够让我们提前了解托福难易度、把握托福考点、了解托福真题的相关特点，下面是托福tpo模考软件下载链接，需要的考生看过来。本文为你提供托福tpo模考软件下载链接，托福tpo模考软件让你随时随地都能练习托福真题，下面我们就先来看看托福tpo模考软件下载的内容。托福tpo模考软件下载内容：TPO24写作阅读材料：Animalfossilsusuallyprovideverylittleopportunitytostudytheactualanimaltissuesbecauseinfossilstheanimals'livingtissueshavebeenlargelyreplacedbyminerals.Thus,scientistswereveryexcitedrecentlywhenitappearedthata70-million-year-oldfossilofTyrannosaurusrex(T.rex),adinosaur,mightstillcontainremainsoftheactualtissuesoftheanimal.ThediscoverywasmadewhenresearchersdeliberatelybrokeopentheT.rex’slegbone,therebyexposingitsinsidestorevealmaterialsthatseemtoberemainsofbloodvessels,redbloodcells,andcollagenmatrix.动物化石很难帮助人们研究动物的软组织，这是因为化石里面的动物活性组织大部分都被矿物质代替了。最近，发现一个7千万年前的霸王龙化石中可能存在真正的动物软组织。这令科学家们非常兴奋。科学家小心翼翼地打开了霸王龙腿骨的时候，发现里面存在着可能为血管、血红细胞和胶原蛋白基质的物质。First,thebreakingofthefossilizedlegbonerevealedmanysmallbranchingchannelsinside,whichprobablycorrespondtohollowsintheboneswherebloodvesselswereoncelocated.Theexcitingfindingwasthepresenceofasoft,flexibleorganicsubstanceinsidethechannels.ThissoftsubstancemayverywellrepresenttheremainsoftheactualbloodvesselsofT.rex.首先，打开腿骨化石之后，科学家发现了内部有一些管状分支，这些管状分支可能是骨内血管存在的地方。令人兴奋的是在这些管状分支中存在着柔软的有机物质。这些柔软的物质可能是霸王龙真正血管的遗留痕迹。......托福tpo模考软件下载内容：TPO24写作例文(仅供参考)Thereadingpassagepointsoutthreeevidencesthatindicatetheexistenceofactuallytissueindinosaurfossil.However,theprofessordoubtstheaccuracyoftheseevidences.Infact,heofferssomealternativeexplanationsforthesubstancesfoundinthefossil.Firstandforemost,hechallengestheexistenceofbloodvessels.Instead,hepointsoutthatbacteriamayoccupythehollowsinsidethebones.Therefore,itishighlypossiblethatthesoftsubstanceinthebranchingchannelsoftheboneisthemoistresidueofbacteria,ratherthanbloodvesselsofthedinosaur.Moreover,theprofessorcastsdoubtabouttheredsubstanceinsphere,whichaccordingtothereadingpassageistheremainofredbloodcells.Infact,theprofessorclaimstha