2014高考英语阅读理解抓分练习题(56)

-1-2014高考英语阅读理解抓分练习题（56）及答案Leaddeposits,whichaccumulatedinsoilandsnowduringthe1960’sand70’s,wereprimarilytheresultofleadedgasolineemissionsoriginatingintheUnitedStates.InthetwentyyearsthattheCleanAirActhasmandatedunleadedgasuseintheUnitedStates,theleadaccumulationworldwidehasdecreasedsignificantly.AstudypublishedrecentlyinthejournalNatureshowsthatair-borneleadedgasemissionsfromtheUnitedStatesweretheleadingcontributortothehighconcentrationofleadinthesnowinGreenland.ThenewstudyisaresultofthecontinuedresearchledbyDr.CharlesBoutron,anexpertontheimpactofheavymetalsontheenvironmentattheNationalCenterforScientificResearchinFrance.AstudybyDr.Boutronpublishedin1991showedthatleadlevelsinarcticsnowweredeclining.Inhisnewstudy,Dr.BoutronfoundtheratiosofthedifferentformsofleadintheleadedgasolineusedintheUnitedStatesweredifferentfromtheratiosofEuropean,AsianandCanadiangasolinesandthusenabledscientiststodifferentiate(区分)theleadsources.ThedominantleadratiofoundinGreenlandsnowmatchedthatfoundingasolinefromtheUnitedStates.InastudypublishedinthejournalAmbio,scientistsfoundthatleadlevelsinsoilintheNortheasternUnitedStateshaddecreasedmarkedlysincetheintroductionofunleadedgasoline.Manyscientistshadbelievedthattheleadwouldstayinsoilandsnowforalongerperiod.TheauthorsoftheAmbiostudyexaminedsamplesoftheupperlayersofsoiltakenfromthesamesitesof30forestfloorsinNewEngland,NewYorkandPennsylvaniain1980andin1990.Theforestenvironmentprocessedandredistributedtheleadfasterthanthescientistshadexpected.Scientistssaybothstudiesdemonstratethatcertainpartsoftheecosystemrespondrapidlytoreductionsinatmosphericpollution,butthatthesefindingsshouldnotbeusedasalicensetopollute.-2-17.ThestudypublishedinthejournalNatureindicatesthat________.A.theCleanAirActhasnotproducedthedesiredresultsB.leaddepositsinarcticsnowareontheincreaseC.leadwillstayinsoilandsnowlongerthanexpectedD.theUSisthemajorsourceofleadpollutioninarcticsnow18.LeadaccumulationworldwidedecreasedsignificantlyaftertheuseofunleadedgasintheUS_____.A.wasdiscouragedB.wasenforcedbylawC.wasprohibitedbylawD.wasintroduced19.HowdidscientistsdiscoverthesourceofleadpollutioninGreenland?A.ByanalyzingthedatapublishedinjournalslikeNatureandAmbio.B.Byobservingtheleadaccumulationsindifferentpartsofthearcticarea..C.BystudyingthechemicalelementsofsoilandsnowinNortheasternAmerica.D.Bycomparingthechemicalcompositionsofleadedgasolineusedinvariouscountries.20.TheauthorsoftheAmbiostudyhavefoundthat________.A.forestsgetridofleadpollutionfasterthanexpectedB.leadaccumulationsinforestsaremoredifficulttodealwithC.leaddepositsarewidelydistributedintheforestsoftheUSD.theupperlayersofsoilinforestsareeasilypollutedbyleademissions阅读理解（共20小题，每小题2分，满分40分）阅读下列短文，然后从各题所给的四个选项（A,B,C,D）中，选出最佳选项。ASomenovelssimplyentertainandotherscontainapowerfulmessageinthestorylineandcharacters.Inhisfirstnovel,AWindInMontana,MitchDaviestellsastoryaboutyoungadultsandhowtheyacceptresponsibilityfortheirlives.AWindInMontanaisamarveloustaleoftwoteenagers,RoryColemanandVictoriaBeach,highschoolstudentsatthesameschool,whostruggletomaketherightdecision-3-forthemselves.Aseachofthemnearsadulthood,theybecomemoreconcernedwiththefutureandsettinggoalsthatwillbringthemhappinessandfulfillment.Withoutanyadvicefromhisparents,Rorychoosestopursueaprofessioninchemistry,appliesforachemistryscholarship,anddeterminestodoeverythinghecantoachieveit.Alongthepath,Roryfindsthateventhoughhehasaplan,thereareobstaclesthatcouldpreventhimfromrealizinghisgoals.Victoria’sstrugglesaredifferentfromRory’s.Althoughherfatherhasdecidedthatsheshouldbecomeaprofessionalmusician,Victoriahasotherplansforherlife.Together,RoryandVictoriaattempttofollowtheirdreams,despitetheobstaclesintheirpaths.AWindInMontanacontainsalessonforallteensabouttoenteradulthood－thatdisappointmentandsetbacks(挫折)aregoingtooccurnomatterhowdeterminedtheyareandthattheyneedtodevelopskillsalongthewaythatwillhelpthemdealwiththemeffectively.Therearesomanymajordecisionsfacingteenstoday－social,parents,otherinfluencingadultsandschoolwork－andthere’snoguaranteethattheirplanswillsucceed,eveniftheymaketheso-called“right”decisions.AWindInMontanaexploreshowtwoteenagersstrugglewiththeirownuniquedecisionsandhowthechoicestheymakeaffecttheirlives.MitchDavies’bookstandsoutamongtoday’steenbooksthatdealwithimaginarysituations.AWindInMontanaisarealstoryaboutrealpeoplefacingreal-lifesituations.It’sentertainingandalsohelpsreadersthinkabouttheirownlivesandoffersvariouswaystohandlesituationsthatmayarise.56.Accordingtothepassage,bothRoryandVictoria_____.A.workhardattheircoursesB.haveastrongsenseofselfC.goagainsttheirparentsD.getalongwellwithothers57.Thethirdparagraphismainlyabout_____.A.thevalueofAWindInMontanaB.MitchDavies’achievementsC.MitchDavies’writingstyleD.thecontentofAWindInMontana58.Unlikeotherteenbooks,AWindInMontana______.-4-A.involvessomeimaginarysituationsB.focusesonresponsibilitiesteensshouldtakeC.isbasedonreal-lifeexperiencesD.discussesthefutureofyoungadults59.What’sthepurposeofthepassage?A.Toreviewabook.B.Toreportapieceofnews.C.Tospeak