在知识经济的概念被提出并被广泛接受之后，人们自然便提出这样的问题：世界发达国家处在知识经济的什么阶段？怎样确定中国知识经济的发展阶段和水平？这些问题对我们迎接知识经济时代的挑战，制定面向知识经济的发展战略和科学决策，乃至在下世纪中叶顺利实现第三步宏伟战略 After the concept of knowledge economy was proposed and widely accepted, people naturally raised the question: What stage are the developed countries in the world in a knowledge-based economy? How to determine the development stage and level of China’s knowledge economy? These issues are of great help to us in meeting the challenges of the era of knowledge-based economy, formulating the development strategy and scientific decision-making for a knowledge-based economy and even realizing the grand strategy of the third stage in the middle of the next century