改革开放以来，民有经济①在我国有了长足的发展，它在发展国民经济、调整经济结构中起到了重要的作用。特别是党的十五大在经济理论上的新突破，更为民有经济的发展提供了前所未有的空间。民有经济的一个基本特点是充满活力，发展速度快，对这一现象的原因进行探究和回答... Since the reform and opening up, the private economy ① has made great strides in our country and played an important role in developing the national economy and adjusting the economic structure. In particular, the new breakthrough made by the 15th Party Congress in economic theory has provided unprecedented space for the development of private economy. One of the basic characteristics of the private economy is that it is full of vitality and has a fast pace of development. It explores and answers the reasons for this phenomenon.