反观人类史,其经济形态经历农业时代,农业经济维系了数千年;工业时代,工业经济的跨度大概是两百多年;本世纪中叶以来,人类逐步进入信息时代,如江泽民总书记所言,知识经济已初见端倪。自本世纪70年代以来,科技进步日益成 On the other hand, the history of mankind has undergone an agricultural era and its agricultural economy has been maintained for thousands of years. In the industrial age, the span of industrial economy is about two hundred years. Since the middle of this century, mankind has gradually entered the information age. As General Secretary Jiang Zemin put it The knowledge economy has begun to take shape. Since the 70s of this century, the progress of science and technology has been increasingly achieved