Disasters 　　1．灾难事件时有发生 　　2．造成灾难的原因 　　3．人类对待灾难的态度 　　Whenitcomestodisasters,quitealotofpeoplebelievetheywillcomeacrosssuddendisastersintheirlife.Tobeginwith,naturaldisasterslikeearthquakes,floodanddraughtoccurnowandthen;inaddition,diseaseslikeSars,cancerandtumorwillattackpeopleunexpectedly;lastbutnottheleast,caraccidents,planecrashescan’tbeignoredaspartofdisasters. 　　Whytherearesomanydisasters?Thereasonsmaygoasfollows:ononehand,somemysteriesaboutnaturearebeyondourcontrolandunderstanding;onanotherhand,peoplearecarelessandcan’tforeseewhatwillhappenbeforehand. 　　Fromwhathasbeendiscussedabove,Imaysafelydrawtheconclusionthatdisasterscan’tbeavoidednow,butwithmoreknowledgeaboutnature,we’llcertainlyreducethelossbroughtbythemtothesmallestdegree,sotheprospectwearelookingforwardtowillbebothbrightandencouraging.