下面段落中哪个支持句与主题句无关? Most important, television is educational. (1)Children learn to know different kinds of animals, volcanoes and trees through science shows. (2)Adults, too, get an education from courses given on television. (3)Also, television widens our knowledge by covering important events and current news. (4)For example, viewers can see and hear presidents' speeches, state funerals and natural disasters. (5)Housewives can kill boredom by watching many interesting TV serials. Answer: 句子应该删除(填写句子前面的数字)。