Socialchangeismorelikelytooccurinsocietieswherethereisamixtureofdifferentkindsofpeoplethaninsocietieswherepeoplearesimilarinmanyways．Thesimplereasonforthisisthattherearemoredifferentwaysoflookingatthingspresentinthefirstkindofsociety．Therearemoreideas,moredisagreementsininterest,andmoregroupsandorganizationswithdifferentbeliefs．Inaddition,thereisusuallyagreaterworldlyinterestandgreatertoleranceinmixedsocieties．Allthesefactorstendtopromotesocialchangebyopeningmoreareasoflifetodecision．Inasocietywherepeoplearequitesimilarinmanyways,therearefeweroccasionsforpeopletoseetheneedortheopportunityforchangebecauseeverythingseetnstobethesame．Andalthoughconditionsmaynotbesatisfactory,theyareatleastcustomaryandundisputed． Withinasociety,socialchangeisalsolikelytooccurmorefrequentlyandmorereadilyinthematerialaspectsoftheculturethaninthenon-material,forexample,intechnologyratherthaninvalues;inwhathasbeenlearnedlaterinliferatherthanwhatwaslearnedearly;inthelessbasicmadlessemotionalaspectsofsocietythanintheiropposites;inthesimpleelementsratherthaninthecomplexones;informratherthaninsubstance;andinelementsthatareacceptabletothecultureratherthaninstrangeelements． Furthermore,socialchangeiseasierifitisgradual．Forexample,itcomesmorereadilyinhumanrelationsonacontinuousscaleratherthanonewithsharpdifference．ThisisonereasonwhychangehasnotcomemorequicklytoBlackAmericansascomparedtootherAmericanminorities,becauseofthesharpdifferenceinappearancebetweenthemandtheirwhitecounterparts． Thepassageismainlydiscussing_____
A.certain factors that determine the ease with which social changes occur B.certain factors that promote social change C.the necessity of social change D.two different societies正确答案A
