Thechangesindietcanbeaccountedforbyanumberoffactors.(3)(主题句)
First,peoplearemuchwealthierthanbefore.(4)(扩展句)
Withahigherincome,theycanaffordtobuygoodfoodswhich,inthepast,wererarelyseenonthedinnertablesofordinaryfamilies.(5)(扩展句)
Anotherfactoristhatpeoplehaverealizedtheimportanceofabalanceddiettotheirhealth.(6)(扩展句)
Lackofcertainamountofmeatormilk,forexample,willresultinpoorhealth.(7)(扩展句)
Finally,owingtotheeconomicreform,meatandmilk,whichwerescarceinthepast,are