Firecanhelppeopleinmanyways.Butitcanalsobeveryharmful(有害的).Firecankeepyourhousewarm,givelight(光)andcookfood.Butfirecanburn(烧)things,too.Bigfirecanburntrees,houses,animalsorpeople.Nobodyknowshowpeoplebegantousefire.Buttherearemanyinterestingoldstoriesabouthowamanorwomanstarted(开始)afire.Oneisaboutaman.Themanlivedverylongtimeago.Hewentuptothesunandbroughtfiredown.Todaypeopleknowhowtomakeafirewithmatches.Childrensometimesliketoplaywiththem.Butmatchescanbeverydangerous(危险).Onematchcanburnapieceofpaper,andthenitcouldbeahouse.Asmallfirecanturnabigfireveryquickly.Soyoumustbecarefulwithmatches.Becarefulwithfire,anditwillhelpyou.Butifyouaren’tcarefulwithfire,itmayhurt（伤害)you.()l.Everyoneknowshowpeoplebeganthefirstfire.()2.Bigfireisverydangerous.()3.Firecanbebothhelpfulandharmful.()4.Onematchcan’tburnahouse.()5.Firecan’tbeusedinmanyways.你能认真阅读一个学校的安全演习时刻表,()1.Whattimeshouldthestudentswaitintheclassroom?A.9:50B.9:35C.9:00D.8:50()2.Whenwewaitintheclassroom,whatshouldwedo?9:00Allthestudentslistentothebroadcastcarefully,andwaitintheclassroomquietly.9:30Whenyouhearthefirealarm,walkoutoftheclassroomquicklyandwalkdownthestairs.Don’tpush.9:35Allthestudentsgettotheplayground.9:38Thefiremencome,andtheywillputoutthefire.9:50Whentheteachersays,“Youcangobacktotheclassroom.”Youcangobacktotheclassroom.3A.Weshouldbequiet.B.Wecanplaygameswithclassmate.C.Wecanreadthestories.D.Wecanwalkintheclassroom.()3.Whenyouhearthefirealarm,whatshouldyoudo?A.Ishouldrun.B.Ishouldwalkdownthestairsquickly.C.Ishouldcall119quickly.D.Ishouldtakemythingsquickly.()4.Whenthefiremencome,whatwilltheydo?A.Theywillruntotheclassroom.B.Theywillfixtheschool’sequipment.C.Theywillstopthefirequickly.D.Theywillhelpuscleantheclassroom.()5.Whencanyougobacktotheclassroom?A.WhenIhearthefirealarm.B.Whenmyfriendstellme.C.WhenIcall119forhelp.D.Whenthefireisputoutandtheteachertellsustogoback..

9:00Allthestudentslistentothebroadcastcarefully,andwaitintheclassroomquietly.9:30Whenyouhearthefirealarm,walkoutoftheclassroomquic