BearsandhumanoftenmeetinNationalPark.Althoughcampersandhikersarewarnednottofeedthebearsmanypeopleignorethesewarningsandfeedthebearsanyway.Whenbearsareusedtopeople’sfoodproblemssoonarise.Bearsliketo

　　BearsandhumanoftenmeetinNationalPark.Althoughcampersandhikersarewarnednottofeedthebearsmanypeopleignorethesewarningsandfeedthebearsanyway.Whenbearsareusedtopeople’sfoodproblemssoonarise.

　　Bearsliketoeatalargevarietyofthingsbothmeatandvegetables.Withouthumanassistancebearslivenicelyonrootstwigsleavesoftreesinsectsandsmallanimals.Withpeoplearoundbears’tastesquicklyexpandtoincludesandwicheshotdogshamburgersandanythingelsetheycantempthumansintogivingup.

　　Bearsoftendevelopcleverstrategiesfoegettingpeopletoletgotheirfoodsupplies.Moreoftenthannotanunsuspectinghikerhastakenoffhisorherpackforarestonlytofindabearrushoutofthewoodsgrabthepackandquicklydisappearintotheunderbrushwithit.Hangingthepackonatreebranchwon’thelp.Bearshavebeenknowntoclimbupjumpoffandcatchthepackonthewaydown.Onemotherbearstretchesupwithherbabyonhershoulderstoreachapackstoredonapole.Manybearsthreatenpeopleintogivinguptheirsupplies.Althoughabearisunlikelytoattackapersonandwouldprobablyrunawayifscreamedatfewpeoplearewillingtodoso.Mostpeopledropthepackandruntheotherway.Thisofcoursedelightsthebear.InsomeplacestheParkServiceinstalledsomemetalbarrelswithlidstohelpcamperskeeptheirsuppliessafefrombears.Althoughthebearswereunabletoopenthesecontainerstheeffortwaslessthansuccessful.Mostcampersunabletotellthemetaldrumsfromrubbishcansneverusedthemfortheintendedpurpose.

　　56.Ifpeoplehadneverfedbearsthebears______

　　A.mightbesatisfiedwithwhattheyhadoriginally

　　B.wouldhavestarvedlongbefore

　　C.wouldn’thaveenoughfoodsupply

　　D.wouldhavehuntedforotherkindsoffoods

　　57.WhichofthefollowingisTRUE?

　　A.Iffedonsandwichesandhotdogsthebearswouldnolongereatrootstwigsandinsects.

　　B.It’slikelythatbearswouldhurtpeopleifthepeopledidn’tgiveuptheirfood

　　C.Mostpeoplewouldfrightenawaythebearsthatwouldtempttheirfood.

　　D.Seeingapackthebearwouldquicklysnatchitandrunawaywithit.

　　58.Bear-proofcontainersdidn’tworkbecause______

　　A.bearsw