第19题: [单项选择]The author uses the comparison with building a cathedral to show that ______. A. worthwhile results do not depend on raw material only B. the mediaeval world had different beliefs C. great works of art require good foundations D. close attention to detail is important 参考答案:A 答案解析:[解析] 大众媒体在此被比喻成建筑的基石,从这个意义上来看,A、C两项都对。但是作者的意思是说仅有大众媒体是不够的,这样就为以下对大众媒体不足的阐述打下了伏笔。