Papers on AIDS prevention and control in the way of moral construction, methods are discussed,pointing out that the government building in the moral responsibility,moral responsibility in goverment,the media\'s moral responsibility,an analysis of the moral construction of medical institutions and medical personnel responsible for the professional ethics.

This paper,from the view of system science,discusses scientific foundation,philosophical foundation and construction ways of ecological civilization and points out that system science is the scientific foundation of eco-logical civilization,dialectical holism is the philosophical foundation and ecological culture is the fundamental con-struction way.

Starting from the differences between virtual reference service resource and traditional reference service resource, the paper has explored the role of virtual reference service, ways of construction and the role of virtual reference service, construction means and matters that merit attention in libraries in China.