Althoughtheworlddevelopsmuchfasterandbetter,theresourcesontheearthgetfewerandfewer.Inordertoprotectthem,somethingmustbedone.

　　Savewater.Wateristhesourceoflife.Nowater,nolife.Soit'sveryimportantforustodoso.Notonlyshouldweprotectdrinkingwaterandstoppollutingit,butalsomakefulluseofit.

　　Saveelectricity.Itiscrucial.Wecan'timaginewhatthelifewillbelikewithoutit.Everyoneshoulddohisbesttosaveelectricity.Don'tforgettoturnofflightsorotherelectricmachineswhenwefinishworking.

　　Saveforests.Theyareuseful.Pleasestopcuttingthemdownanduserecycledpaperinstead.Makeourworldagreenonetolivein.

　　Recycleusefulrubbish.Plentyofrubbishcanberecycledlikecans,paper,bottles,andsoon.Wecansaveresourcesinthisway.