Socialchangeismorelikelytooccurinsocietieswherethereisamixtureofdifferentkindsofpeoplethaninsocietieswherepeoplearesimilarinmanyways.Thesimplereasonforthisisthattherearemoredifferentwaysoflookingatthingspresentinthefirstkindofsociety.Therearemoreideas,moredisagreementsininterest,andmoregroupsandorganizationswithdifferentbeliefs.Inaddition,thereisusuallyagreaterworldlyinterestandgreatertoleranceinmixedsocieties.Allthesefactorstendtoprotnotesocialchangebyopeningmoreareasoflifetodecision. Inasocietywherepeoplearequitesimilarinmanyways,therearefeweroccasionsforpeopletoseetheneedortheopportunityforchangebecauseeverythingseemstobethesame.Andalthoughconditionsmaynotbesatisfactory,theyareatleastcustomaryandundisputed. Withinasociety,socialchangesisalsolikelytooccurmorefrequentlyandmorereadilyinthematerialaspectsoftheculturethaninthenon-material,forexample,intechnologyratherthaninvalues;inwhathasbeenlearnedlaterinliferatherthanwhatwaslearnedearly;inthelessbasicandlessemotionalaspectsofsocietythanintheiropposites;inthesimpleelementsratherthaninthecomplexones;informratherthaninsubstance;andinelementsthatareacceptabletothecultureratherthaninstrangeelements. Furthermore,socialchangeiseasierifitisgradual.Forexample,itcomesmorereadilyinhumanrelationsonacontinuousscaleratherthanonewithsharpdifference.ThisisonereasonwhychangehasnotcomemorequicklytoBlackAmericansascomparedtootherAmericanminorities,becauseofthesharpdifferenceinappearancebetweenthemandtheirwhitecounterparts. Oneofthefactorsthattendtopromotesocialchangeis__________.
A.joint interest
B.different points of view
C.less emotional people
D.advanced technology
正确答案是B