AtlastfiremenhaveputoutabigforestfireinCalifornia.Sincethen,theyhavebeentryingtofindouthowthefirebegan.Forestfiresareoftencausedbybrokenglassorbycigaretteendswhichpeoplecarelesslythrowaway.Yesterdaythefiremenexaminedthegroundcarefully,butwerenotabletofindanybrokenglass.Theywerealsoquitesurethatacigaretteenddidnotstartthefire.Thismorning,however,afiremenaccidentallydiscoveredthecause.Henoticedtheremainsofasnakewhichwaswoundroundtheelectricwiresofa16,000-voltpowerline.Inthisway,hewasabletosolvethemystery.Theexplanationwassimplebutveryunusual.Abirdhadsnatchedupthesnakefromthegroundandthendroppeditontothewires.Thesnakethenwounditselfroundthewires.Whenitdidso,itsentsparksdowntothegroundandtheseimmediatelystartedafire.

　　摘要写作

　　NowthatfiremenhaveputoutabigforestfireinCalifornia,theyhavebeentryingtodiscoveritscause.

　　Therewasnotanyevidencethatitwasstartedbybrokenglassorbyacigaretteend.

　　However,afiremanhasjustsolvedthemystery.

　　Henoticedthattheremainsofasnakewhichhadbeendroppedbyabirdontotheelectricwires.

　　Inwindingitselfroundthewires,thesnakehadsentsparkstothegroundandthesecausethefire.

　　作文

　　Lastweekoneevening,Iwassmokinginbed,butsometimelater,Iwenttosleep.Isuddenlywokeandjumpedupthebed,whenthesheethadbeenburning.AtlastIhaveputthefireout,buttherehadbeenabigholeinthesheet.

　　书信写作

　　333CaoyangStr.,

　　Hefeicity,

　　Anhuiprovince.

　　March20th.

　　DearMrs.,