“公共服务”概念的提出美国著名传播学者施拉姆曾经指出:“在为国家发展服务时,大众传播媒介是社会变革的代言者,他们所能帮助完成的是这一类社会变革:即向新的世俗行为,有时是向新的社会关系的 ”Public service “ concept put forward The famous American scholar Schramm has pointed out: ”When serving the development of the country, the mass media is the spokesman for social change, they can help accomplish this type of social change : To new secular behavior, sometimes to new social relations