Airpollutioncomesfromfactoriespowerstationsandcars.Chemicalsinthesmokefrompowerstationscausealotofdamage（损害；毁坏）.Theycantravelhundredsofmilesinthewindbeforefallingtothegroundintherain.Andthis“chemicalrain”gradually（逐渐地）destroystreesintheforestsandkillsfishinthelakes.InGermanyover50%ofthecountry’streeshadbeendamagedbytheyear1986.
Timeandtimeagainthereareseriousaccidentsthatpollutetheair.In1986therewasaseriousaccidentatanuclearpowerstationinRussia.AcloudofradiationflewacrossthewholeEurope.Itissaidthat125000peoplediedinRussiaasaresultofillnesscausedbythisaccident.
In1984therewasaseriousaccidentatafactoryinIndiaandacloudofdangerousgascoveredthetownofBhopal.Over2500peoplewerekilledthatnightandhundredsofthousandsofpeoplewereinjured(受伤的).Manyoftheinjuredlosttheirsight.
( )54.Airpollutioncomesfrom_____.
A.factories B.powerstations C.cars D. ABandC
( )55.Accordingtothepassagewhichsentenceisright?
A.Chemicalsinthesmokefrompowerstationscan’ttravelfarinthewind.
B.“Chemicalrain”isgoodforthetrees.
C.“Chemicalrain”isbadforourenvironment.
D.Chemicalsinthesmokefrompowerstationsareverysafe.
( )56.InGermanyhowmanytreeshadbeendamagedbytheyear1986?
A.Aquarter. B.Ahalf. C.Threequarters. D.Athird.
( )57.WhatwastheresultoftheaccidentthathappenedinRussiain1986?
A.Over2500peoplewerekilled.
B.Manypeoplecouldn’twalk.
C.Manypeoplelosttheirsight.
D.Comparedwith(同……比较)theaccidentinIndiamorepeopledied.
