阅读理解。Theearthisourhome.Wemusttakecareofit.Thismeanskeepingtheland,airandwaterclean.Pollutionisa"dirty"word.Topollutemeanstomakethingsdirty.Pollutioncomesinmanyforms.Weseeit,smelli

　　阅读理解。 Theearthisourhome. Wemusttakecareofit. Thismeanskeepingtheland,airandwaterclean.

　　Pollutionisa"dirty"word.Topollutemeanstomakethingsdirty.Pollutioncomesinmanyforms. We

　　seeit, smellitanddrinkit. Pollutionisbeginningtodoharm

　　(损害，伤害)toourhealth,andeventoourlife.

　　Manhasbeenpollutingtheearthfromthetimehefirstmadehisfire9washedhisclothesintheriver

　　andthrewhisrubbishontheground. Manyyearsago,theproblemwasnotsoseriousbecausethere

　　werenotsomanypeople. Allthedirtythingswouldsoonbecoveredup. Therewasplentyofcleanair,

　　landandwater. Whenthelandwasuseduportheriverwasdirtyinaplace,menmovedtoanother

　　place. Butthisisnolongertrue. Manisnowslowlypollutingthewholeworld.

　　Talkingaboutpollution,weonceonlymeantairpollution.Itistruethatairpollutionisstillthemost

　　dangerousnow,butitisonlyonekindofpollution.

　　Byusingpoison(毒药),wehavepollutedthelandandkilledtheanimals.Byputtingdirtywaterinto

　　riverandlakes,wehavepollutedourdrinkingwaterandkilledthefish. Theriseinpopulationispartof

　　theproblem. Morepeople, morerubbish.

　　Whereisthisalltoend?Areweturningtheworldintoabigrubbishdump,oristhereanyhopethat

　　wecangetridof(摆脱，除去)pollution?Wearegladtosaythatthepublichasbeenwarnedofthe

　　dangersofpollutionandalargenumberofpeopleareworkinghardtogetridofit.根据短文内容判断正（T）误（F）。

　　( )1.Takingcareoftheearthmeanskeepingtheland,airandwaterclean.

　　( )2.Pollutionisbadforourhealth,andeventoourlife.

　　( )3.Theproblemwasnotveryseriousbecausethereweremanypeoplemanyyearsago.

　　( )4.Therearemanykindsofpollution. Waterpollutionisthemostda