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.;.Part1ReadingSectionAFormat1Tohearmostrecentresearchtellit,coffeeisamiracledrink.ThemagicbeanswillwardoffskincancerandAlzheimer’s(老年痴呆症),reduceheartfailureanddiabetes（糖尿病）risks,heightenfocus,andmaybeevenprotectliverhealth.Oh,anddecreasesuiciderisk,accordingtotheneweststudythatvalidatesourcoffeeaddictions.AccordingtoastudyperformedbytheHarvardSchoolofPublicHealthandpublishedthismonthinTheWorldJournalofBiologicalPsychiatry,peoplewhodrinktwotofourcupsofjavaeachdayarelesslikelytocommitsuicidethanthosewhodon’tdrinkcoffee,drinkdecaf,ordrinkfewerthantwocupseachday.Thestudyfollowedover200,000peopleforatleast16years.Andit’snotjustaweaklink:theresearchersfoundthatthesuicideriskwascutbyaround50percentforcoffeeaddicts.Thisisn’tthefirsttimethatresearchershavediscoveredthatcoffeeandsmilesmightgohand-in-hand.A2011studyfoundthatwomenwhodrinkcoffeecuttheirriskofdepressionby15percentcomparedtothosewhodon’t.MichelLucas,theheadresearcherofthemostrecentstudy,toldTheHuffingtonPostthatcoffeeaddictscanthankcaffeineforthegoodnews.Thedrugmayactuallyactlikeamildanti-depressantbytweakinglevelsofhappyhormones.Ofcourse,there’splentyofresearchouttherethatdoesn’tlooksokindlyuponcoffeedrinkers.Recently,theNewYorkerpublishedanarticlearguingthatwhilecoffeemayheightenfocus,thatmeansitalsoputsasqueezeoncreativity.Andofcourse,coffee’swell-knownnegativeeffectslikeinsomnia(失眠症)anddisturbedsleepcyclesstillhold.Regardless,we’llraiseourmugstothismostrecentstudyforjustifyingourcoffeeaddictionsonceagain.1.Whichofthefollowingisnotmentionedasapossiblebenefitofdrinkingcoffee?A.reducingheartfailurerisksB.protectingliverhealthC.preventingskincancerD.improvingeyesight2.AccordingtoastudyperformedbytheHarvardSchoolofPublicHealth,peoplearelesslikelytocommitsuicideifthey________A.drinkfewerthantwocupsofcoffeeeachdayB.drinkmorethanfourcupsofcoffeeeachdayC.drinktwotofourcupsofcoffeeeachdayD.don'tdrinkanycoffeeeachday3.Thereasonwhycoffeecancutthesuicideriskliesinthat_________A.itcanheightenfocusB.itcancureskincancerC.itmayhelptopreventdepression.;.D.itmaymakepeoplelesscreative4.Oneofthenegativeeffectsofcoffeeisthatit__________A.costsalotofmoneyB.disturbssleepC.makespeoplefatD.causescoffeeaddictions5.Whatmightbethewriter'sattitudetowardcoffeedrinking?A.PositiveB.HostileC.IndifferentD.ToughPassages2Polarbearsareclassifiedasmarinemammals(哺乳动物),likeasealorawhale,whichmightcomeasasurprisegiventhatthey'reusuallypicturedonland.ButpolarbearsspendalotoftheirtimeinthewatersoftheArctic(北极),fishingorswimmingamongtheseaice.Theymaylookawkwardinthewater,butnocreaturewithpawsisabetterswimmer.They'dbetterbe.Arcticseaiceisdecliningfast,robbingthepolarbearofitsprimehabitatandforcingthemtoswimlongerandlongerdistancestoreachsolidground.Nootheranimalseemstobesuchadirectvictimofwarming,whichisonereasonwhythepolarbearhasemergedasthesymbolofclimatechange.(Anotheristhattheylooksocuteandcuddly.)It'sasimplenarrativetograsp:carbonwarmstheclimate,Arcticseaicemeltsandbabypolarbearsdown.Butitturnsoutitmightnotbethatsimple.AnewstudybyscientistsattheU.S.GeologicalSurvey(USGS)underscoresthefactthatpolarbearsreallyareamazingswimmer.Infacttheyaresogoodthatbiologistswereabletodocument50swimsthatcoveranaveragelengthof96miles.theresearchprovidescluesthatpolarbearsmaybeabletokeeptreading(踩)waterevenasclimatechangemeltstheirhabitat.TheresearcherspublishedtheirworkintheCanadianjournalofzoology.theyfollowed52femalepolarbearsintheArcticOceannorthofAlaskafrom2004to2009,usingradiocollarsthatcouldtrackthemovementsoftheanimals.Theythencomparedthepathstakenbythebearswithmapsofshiftingseaiceoverthesameperiodoftime,andfoundthatthepolarbearswereworld-classmarathonswimmersandthoselong,longdipsintheoceanweren'toutliers——whilethereallylong-distanceswimswererelativelyrate,38%ofthebearssurveyedtookatleastonesuchmarathonswim.6.Peoplemayfeelsurprisedtoknowthatpolarbearsareclassifiedasmarinemammalsbecause______A.polarbearscannotliveintheseaB.polarbearshavepawsandcanwalkC.polarbearsareusuallyseenonlandD.polarbearsarerarelypicturedbypeople7.whatdoesthewritermeansayingnocreaturewithpawsisabetterswimmerinthefirstparagraph?A.polarbearsarethebestswimmersintheworldB.polarbearsswimbetterthanotheranimalswithpawsC.noothercreatureswithpawscanswim.;.D.creaturewithpawscanswimbetterthananyfish8.Thesecondparagraphismainlyabout___________A.thedangerthebabypolarbearswillfaceB.thereasonwhypolarbearsaresopopularC.thecausesofclimatechangeD.theeffectsofwarmingonpolarbears9.Theunderlinedwordunderscores(Paragraph3)istheclosestinmeaningto“___________”A.emphasizesB.deniesC.understandD.accepts10.Whatdidtheresearchersusetotrackthemovementsofthe52femalepolarbears?A.GPSB.AirplanesC.RadioCollarsD.MapsofshiftingseaicePassage3Howmanyhundredsofheroesgounheralded（未宣布的）fromthedaysoftheUndergroundRailroad?WhilewecelebratesuchimportantfiguresasHarrietTubmanandFrederickDouglass,numerousotherswereneededtomaketheoperationoftherailroadasuccess.Runawayslaveshadtobegivenshelterfromweatherandfromsearchparties.Thetaleofthisawesomephenomenonisoneofcooperation,coordin