根据下列内容，回答196-198题。 SanFranciscohasitscablecars.SeattlehasitsSpaceNeedle.And,Longviewhasitssquirrelbridge.Thebridge,whichhasattractedinternationalattention,isnowalocallandmark. TheNuttyNarrowsBridgewasbuiltin1963byalocalbuilder,AmosPeters,togivesquirrelsawaytocrossthebusyroadwithoutgettingflattenedbypassingcars. TheoriginalbridgewasbuiltoverOlympiaWayonthewestedgeofthelibrarygrounds. Beforethebridgewasbuilt,squirrelshadtoavoidtraffictoandfromtheParkPlazaofficebuildingwhereofficestaffputoutanuttyfeastforthesquirrels.Manytimes,PetersandotherswhoworkedinandnearParkPlazawitnessedsquirrelsbeingrunover. OnedayPetersfoundadeadsquirrelwithanutstillinitsmouth,andthatday'scoffeebreakdiscussionturnedintosquirrelsafety.ThegroupofbusinessmencookedupthesquirrelbridgeideaandformedacommitteetoasktheblessingoftheCityCouncil.TheCouncilapproved,andCouncilwomanBessLaRivierenamedthebridge"NuttyNarrows." Afterarchitectsdesignedthebridge,AmosPetersandBillHutchstartedconstruction.Theybuiltthe60-footbridgefromaluminumandlengthsoffirehose.Itcost$1,000. Itdidn'ttakelongbeforereportsofsquirrelsusingthebridgestarted.Squirrelswereevenseenguidingtheiryoungandteachingthemtheropes.Thestorywaspickedupbythemedia,andNuttyNarrowsbecameknowninnewspapersallovertheworld. In1983,after20yearsofuse,Peterstookdowntheworn-outbridge.Repairsweremadeandcrosspieceswerereplaced.ThefadedsignwasrepaintedandinJuly1983,hundredsofanimalloversattendedthecompletionceremonyofthenewbridge. Petersdiedin1984,andaten-footwoodensquirrelsculpturewasplacednearthebridgeinmemoryofitsbuilderandhisdevotiontotheproject. Whatdoestheunderlinedphrase"teachingthemtheropes"probablymeansinthetext?__________
A.Passing them a rope B.Directing them to store food for winter C.Teaching them a lesson D.Showing them how to use the bridge正确答案D
