小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.comUnit2单元测试一、阅读理解（共两节，满分35分）第一节（共10小题，每小题2.5分，满分25分）阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。AMorethantwothirdsoftheworld’spolarbearswillbewipedoutby2050,accordingtoashockingnewstudy.Bythen,scientistssay,globalwarmingwillhavemelted42percentoftheArcticseaice.By2100,onlyaveryfewoftheseimportantcreatureswillbeleft.ThereporthasbeenproducedbytheUSGeologicalSurvey.ThescientistshavepublicizedtheirfindingsinthehopeofinfluencingUSInteriorSecretaryDirkKempthorne,whohasbeenaskedtoputpolarbearsontheUSendangeredspecieslist.Polarbearsdependonfloatingseaiceasaplatformforhuntingseals,whicharetheirmainfood.Withoutenoughice,polarbearswouldbeforcedtogoontotheland,wheretheyarekilledbyhunters,andwouldbeunlikelytoadapttothelifeonthelandintime.Expertssayfewlittlebearswouldsurviveandthestresscouldmakemanyfemalesunabletogetpregnant.TheteamofAmericanandCanadianscientistsspentsixmonthsstudyingbears:ontheground,fromspotterplanesandinthelab,usingcomputermodels.Someteammembersfeartheresultisevenworseforthebearsthanwhattheirreportsays.TheysaytheArcticiswarmingfasterthananywhereintheworldandmuchfasterthantheircomputerhadbeenforecasting,Satelliteobservationshaveshowedthattheicehasdecreasedtoanall-timelow.However,noteveryoneinthescientificcommunitybelievesthatglobalwarmingishappeningonsuchanalarmingscale.Anotherinvestigationhasfoundthatpolarbearsarestillbeinghuntedbywealthy“sportsmen”whowanttheirskinsandheads.Atleastteninternationalcompaniesofferbear-huntingtrips.1.WhatdoweknowaboutDirkKempthorneaccordingtothepassage?A.Heisananimalscientist.B.HeisaprotectorofanimalsworkingfortheUSgovernment.C.HewasaskedtoputpolarbearsontheUSendangeredspecieslist.D.Heofferedtoputpolarbearsontheendangeredspecieslist.2.Whywillpolarbearsdieoutifthereisnotenoughseaice?A.Becausepolarbearscan’tcatchenoughfoodwithoutseaice.B.Becausepolarbearseaticewhentheyfeelthirsty.C.Becausepolarbearswillbeeasilyfoundbyhunterswithoutice.D.Becausemostfemalebearsareusedtogivingbirthunderice.3.Afterasix-monthstudy,somescientistsfearthat________.A.thereissomethingwrongwiththeircomputers小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.comB.polarbearswilldisappearevenfasterthantheyeverexpectedC.theircomputermodelsarenotasaccurateastheyexpectedD.globalwarmingwilldestroyeverythingintheArcticBTheBritishareknownfortheirsenseofhumor.However,itisoftendifficultforforeignerstounderstandtheirjokes.ThemainpointtorememberisthattheBritishoftenuseunderstatement.Understatementmeanssayinglessthanyouthinkorfeel.Forexample,ifsomeonegetsverywetinashowerofrain,hemightsay,“It’salittledamp（潮湿的）outside.”Or,ifsomeoneisveryimpoliteandshoutsatanotherperson,someoneelsemightsay,“Sheisn’texactlyfriendly.”Understatementisoftenusedinanunpleasantsituationortomakeanotherpersonlooksilly.UnderstatementplaysanimportantpartinBritishhumor.AnotherkeytounderstandingBritishhumoristhattheBritishliketomakefunofthemselvesaswellasothers.Theyoftenlaughaboutthesillyandunpleasantthingsthathappentooureverydaylifewhensomeoneaccidentlyfallsoverinthestreet.Theyalsoliketomakejokesaboutpeoplefromdifferentclassesofsociety.Theyliketomakejokesabouttheiraccents,thewaytheydressa...