09春学期《大学英语（一）》第2次作业一、单选题（共40道试题，共100分。）V1.TheairinBeijingisgettingmuch_______nowthanafewyearsago.A.cleanB.cleanerC.cleanestD.thecleanest满分：2.5分2.A

　　09春学期《大学英语（一）》第2次作业一、单选题（共40道试题，共100分。）V1.TheairinBeijingisgettingmuch_______nowthanafewyearsago.A.cleanB.cleanerC.cleanestD.thecleanest满分：2.5分2.Adiethighinfatmayberesponsible_______severaltypesofcancer.A.forB.ofC.toD.at满分：2.5分3.Ithinkweshould_______theseinterestingoldcustoms.A.preventB.preserveC.reserveD.serve满分：2.5分4.Theyoungpeoplespoke_______lengthabouttheirexperiences.A.inB.atC.withD.by满分：2.5分5.Therearetreeson_______sidesoftheriver.A.bothB.allC.eitherD.neither满分：2.5分6.Theheroofthestoryisanartistinhis_______.A.thirtiethB.thirtyC.thirty’sD.thirties满分：2.5分7.I_______onthosedaysasthehappiesttimeofmylife.A.lookatB.lookdownC.lookbackD.lookfor满分：2.5分8.Somewordsarehardto_______becausetheyhavemanydifferentuses.A.spellB.pronounceC.defineD.mean满分：2.5分9.Mysportsshoesaretoosmall.Iwanttobuy_______pair.A.theothersB.theotherC.otherD.another满分：2.5分10.Advertisingisoftenthemost_______methodofpromotion.A.efficientB.efficiencyC.effectD.effective满分：2.5分11.Williamrealizedthatheshouldhavefelt_______withhisjob,buthedidn’tA.contentedB.suitableC.comfortableD.interested满分：2.5分12.十年来我一直在坚持收听收音机里的英语节目。A.IlistenedtotheEnglishprogramsovertheradiotenyearsago.B.IoftenkeptonlisteningtotheEnglishprogramsovertheradiotenyearsago.C.FortenyearsIkeptonlisteningtotheEnglishprogramsovertheradio.D.FortenyearsIlistenedtotheE满分：2.5分13.Johnwassodrunkthathefelloffthebikeand_______bytheroadsideuntilthenextmorning.A.laidB.liedC.hadlainD.lay满分：2.5分14.TheEnglishoftodayisverydifferent_______theEnglishof500yearsago.A.toB.inC.byD.from满分：2.5分15.TheBBC_______thenewstoallpartsoftheworld.A.showsB.broadcastsC.tellsD.communicates满分：2.5分16.We_______goodstoover40differentcountries.A.importB.exportC.portD.report满分：2.5分17.Myletterswereallreturnedtome,soIdecidedtogoaroundtoherhouse_______person.A.withB.atC.inD.of满分：2.5分18.Itwasn’tagoodthing;_______thecontraryitwasahugemistake.A.ofB.onC.inD.at满分：2.5分19.—Whichisyourpreference,teaorcoffee?—_______A.OK,thanks.B.Ilikeboth.C.CanIchoose?D.Ichooseteaanytime.满分：2.5分20.Bysunsetwehad