英语语法,定语从句,most of which are thoseAmong all of the above activities,a childcould either be influenced by his or her peer group especially when left without attention or be influenced by what he or she watches on TV,most of which are those not meant to be viewed by the child’s age group.此句话中 which指代什么?those呢?是不是those可以省略?很不理解这句话为什么还要加个those

英语语法,定语从句,most of which are those
Among all of the above activities,a childcould either be influenced by his or her peer group especially when left without attention or be influenced by what he or she watches on TV,most of which are those not meant to be viewed by the child’s age group.此句话中 which指代什么?those呢?是不是those可以省略?很不理解这句话为什么还要加个those