2019译林牛津版高考英语一轮训练选：模块6U2含答案一、阅读理解。OldFossilsScientistshavefoundwhattheythinkisprobablytheoldestfossilonEarth,aremnantoflifefrom3.7billionyearsagowhenEarth'sskieswereorangeanditsoceansgreen.InanewlymeltedpartofGreenland,Australianscientistsfoundtheleftoverstructurefromacommunityofmicrobes（微生物）thatlivedonanancientseafloor.Basedontheiranalysisofthefossils,theresearchersdeterminedthattheyare220millionyearsolderthanthosediscoveredinWesternAustralia,whichwere3.48billionyearsold.Thediscoveryshowslifemayhaveformedquickerandmoreeasilythanoncethought,abouthalfabillionyearsafterEarthformed.Andthatmayalsogivehopeforlifeformingelsewhere,suchasMars,saidstudyco-authorMartinVanKranendonkoftheUniversityofNewSouthWalesanddirectoroftheAustralianCenterforAstrobiology.＂Itgivesusanideahowourplanetevolvedandhowlifegainedafoothold,＂VanKranendonksaid.ScientistshadthoughtitwouldtakeatleasthalfabillionyearsforlifetoformafterthemoltenEarthstartedtocoolabit,butthisshowsitcouldhavehappenedquicker,hesaid.That'sbecausethenewlyfoundfossilisfartoocomplextohavedevelopedsoonaftertheplanet'sfirstlifeforms,hesaid.Inanoutcropofrocksthatusedtobecoveredwithiceandsnowwhichmeltedafteranexceptionallywarmspring,theAustralianteamfoundstromatolites（叠层石）,whicharelayeredstructuresthatareoftenproducedbyacommunityofmicrobes.Thestromatoliteswereabout1to4centimetershigh.＂Itislikethehouseleftbehindmadebythemicrobes,＂VanKranendonksaid.＂Scientistsusedthelayersofashfromvolcanoesandtinyzircon（锆石）withuraniumandestimatedthattheydatebackto3.7billionyearsago.＂Thedatingseemsaboutright,saidAbigailAllwood,aNASAastrobiologistwhofoundthepreviousoldestfossil,from3.48billionyearsago,inAustralia.ButAllwoodsaidsheisnotcompletelyconvinced页1第thatwhatVanKranendonk'steamfoundoncewasalive.Shesaidtheevidencewasn'tconclusiveenoughthatitwaslifeandnotageologicquirk（地质巧合）.＂Itwouldbenicetohavemoreevidence,butintheserocksthat'salottoask,＂Allwoodsaidinanemail.1.Theunderlinedwords＂gainedafoothold＂inParagraph3mean______.A.continuedB.changedD.StartedC.increased2.WecanlearnfromParagraph4______.A.thefossilappearedsoonafterthebirthoftheearthB.thefossilformedsoonaftertheearth'sfirstlifeC.lifeformedearlierthanthenewlyfoundfossilD.lifeappearedabouthalfabillionyearsago3.WhatisAbigailAllwood'sattitudetowardsthenewlyfoundfossil?A.Neutral.B.Sceptical.C.Objective.D.Supportive.4.Accordingtothepassage,______.A.thepreviousfossilsareageologicquirkB.thepreviousfossilsaremadeupofstromatolitesC.thenewlyfoundfossilscomefromWesternAustraliaD.thenewlyfoundfossilshaveahistoryof3.7billionyears【语篇解析】文章介绍科学家发现距今37亿年前的化石。1.D【解析】词义猜测题。根据文章第三段的句子＂Itgivesusanideahowourplanetevolved＂这让我们了解星球是怎么形成的，下文是生命是怎么开始的。可知，＂gainedafoothold＂意为＂开始＂。故选D。3.B【解析】观点态度题。根据文章最后一段的句子＂Shesaidtheevidencewasn'tconclusiveenoughthatitwaslifeandnotageologicquirk(地质巧合).＂可知，AbigailAllwood对于新发现的化石态度是页2第怀疑的。故选B。4.D【解析】细节理解题。根据文章第一段的句子＂remnantoflifefrom3.7billionyearsago＂和第二段的句子＂theresearchersdeterminedthattheyare220millionyearsolderthanthosediscoveredinWesternAustralia,whichwere3.48billionyearsold.＂可知，新发现的化石有37亿年历史。故选D。二、单项选择。1.You'dbettertakeapenwhenyougotothemeeti...