河南郑州孙明明同学:十七大报告提出要建设『生态文明』,请问——十七大报告第一次提出“生态文明”的理念。一些同学以为山青水秀就是生态文明了,其实,生态文明的内涵还要广得多。人类文明的发展一共经过三个阶段。原始文明阶段,人类靠集体的采集和渔猎生存,被动地去适应自然;农业文明阶段,人类通过 Zhengming Sun, a student from Zhengzhou, Henan Province: The 17th National Congress of the People’s Republic of China proposed to build an “ecological civilization.” I would like to ask the concept of “ecological civilization” first proposed by the 17th National Congress of the CPC. Some students think that green scenery is an ecological civilization. In fact, the connotation of ecological civilization is much broader. The development of human civilization has gone through three stages. In the primitive civilization stage, human beings depended on collective collection and fishing and hunting to survive and passively adapt to nature; at the stage of agricultural civilization, humanity passed