这句英语如何理解Today,thehighsalesofpopularconsumergoodsreflectthepowerofadvertisingandnottherealneedsofthesocietyinwhichtheyaresold.这里的which指代什么,定语从句要用被动

　　这句英语如何理解

　　Today,thehighsalesofpopularconsumergoodsreflectthepowerofadvertisingandnottherealneedsofthesocietyinwhichtheyaresold.这里的which指代什么,定语从句要用被动