Unit12Fire第三课时习题一、判断下列划线部分的发音是相同还是不同。()1.A.thinB.path()2.A.mouthB.then()3.A.thanB.them()4.A.theseB.they()5.A.thoughB.thousand二、选择题。1.Youmustbecareful__________fire.A.inB.toC.with()2.Ifwesawafire,wemustcall__________.A.120B.119C.112()3.Children_________playwithfire.It'sdangerous.A.mustB.mustn'tC.can't()4.________isfirst.A.SafetyB.SafeC.Safty()5.Wemustn't_______.A.SmokeB.smokingC.tosmoke三、连词成句。Wemustbecarefulwithfire.1.翻译句子：____________________________________________2.变成一般疑问句：____________________________________________3.变成否定句：____________________________________________4.对划线部分提问：____________________________________________5.将主语替换为he：____________________________________________四、阅读理解。Firecanhelppeopleinmanyways.Butitcanbeverydangerous.Firecanheatwater，warmhouses，givelightandcook.Butfirecanburnthings,too.Itcanbumtrees,houses,animalsorpeople.Sometimesbigfirecanbumforests.Nobodyknowsforsurehowpeoplebegantousefire.Buttherearemanyinterestingstoriesaboutthefirsttimeamanorawomanstartedafire.OnestoryfromAustraliatellsaboutamanvery,verylongtimeago.Hewentuptothesunbyarope(绳子)andbroughtfiredown.Todaypeopleknowhowtomakeafirewithmatches(火柴).Childrensometimesliketoplaywiththem.Butmatchescanbeverydangerous.Onematchcanburnapieceofpaper,andthenitmightburnahouse.Asmallfirecanbecomeabigfireveryfast.Firekillsmanypeopleeveryyear.Soyoumustbecarefulwithmatches.Youshouldalsolearntoputfires.Firesneedoxygen(氧气).Withoutoxygentheywilldie.Coverafirewithwater,sandorsometimeswithyourcoat.Thiskeepstheairawayfromafireandkillsit.Becarefulwithfire,anditwillhelpyou.Becarelesswithfire,anditwillbumyou.()1.Howdidpeoplebegintousefire？A.NoteverybodyknowshowpeoplebegantousefireB.NobodyknowshowtomakeafireCItisanAustralianwhostartedafireD.Wearenotsurehowpeoplebegantousefire()2.Childrenmustn'tplaywithmatchesbecauseA.matchesbumpaperB.isn'tinterestingC.theycanbedangerousD.theycanbumahouse()3.Whenyouaregoingtoputoutafire,y...
