【阅读短文选择正确答案并找出关键词语、句子Milan,thesecondlargestcityofItaly,haswonanundesirableworldrecord.Ofthe54bigcitiesstudiedbytheWorldHealthOrganizationandtheUnitedNations,Milanwasconsideredtohave】

　　阅读短文选择正确答案并找出关键词语、句子

　　Milan,thesecondlargestcityofItaly,haswonanundesirableworldrecord.Ofthe54bigcitiesstudiedbytheWorldHealthOrganizationandtheUnitedNations,Milanwasconsideredtohavetheworstairpollution.

　　Accordingtothesetwo10-yearstudies,thelevelofairpollutioninMilanistwiceashighasthelevelsinParisandBeijingandthreetimesthoseinTokyoandLondon,andfourtimesthatinNewYork.ThereasonforMilan’sbadpollution,tosomeexperts,isthatthecityliesinavalleythatholdsbackthepoisonous(有毒的)gases.

　　ThoughMilanhastakensomemeasurestolowerthelevelofpollution,thesituationisstillworrying.Peoplejoketoeachother,“Ifyou’retravelingtoMilan,besuretobringyourgasmask(面具).”

　　Inordertoreducetheuseifprivatecarsin1979,theMilanbegananinterestingexperiment:Passengersinthecitybusesdidn’thavetopayfortheirtickets.

　　1.WhichisNOTmentionedinthepassage?

　　A.ThereasonfortheairpollutioninMilan.

　　B.ExpertsthoughtthattheairinMilanwasbadlypolluted.

　　C.Milan’swaterisregardedtobeworstpolluted.

　　D.ThemeasurestakenbyMilantoreducetheairpollution.

　　2.Whichofthefollowingcitieskeepsthelowestlevelofairpollution?

　　A.LondonB.TokyoC.ParisD.NewYork

　　3.WhyistheairpollutioninMilansoserious?

　　A.Becausethecityliesinaplacewhereitisdifficultforpollutedairtomove

　　away.

　　B.Becausetoomanycarsarebeingdriveninthecity.

　　C.Becausethecityliesinaplacewheretherearesomemountainsnearit.

　　D.BecauseMilanhastakensomeworryingmeasures

　　4.Accordingtothepassage,whichofthefollowingisTRUE?

　　A.Milanhastakensomemeasuresandtheairpollutionisbeingreduced.

　　B.Milanhastakensomemeasures,buttheairpollutionisstilltroublesome.

　　C.Milanhastakennomeasuressofartolowerthelevelofpollution.

　　D.Milanhastakeneverysteptoreducetheairpollution.

　　5.ThegovernmentofMilanencouragedthepeopletotakecitybusesforfreeinorderto______.

　　A.haveasafertransportB.stoptheairpollutioncompletely

　　C.