2Anning W, Viney A. China' s Dairy Economy : Demand, Supply and Opportunities. Paper presented at the Symposium China' s Agricultural Trade and Policy : Issues, Analysis, and Global Consequences, June25-26,1999 [ C 3. San Francisco, California, U. S. A. , 1999.
5Curtin RT. Psychology and Macroeconomics : Fifty-years of the survey of Consumers [ M ]//House JS, Juster F'F, Kahn RL, et al. A Telescope on Society Survey Research and Social Science at the University of Michigan and Beyond. Ann Arbor :The University of Michigan Press ,2003.
6Roselius T. Consumer Rankings of Risk Reduction Methods [ J ]. European Joumal of Marketing, 1999,33 (9) :911-925.
7Slovic P. The Perception of Risk [ M ]. London : Earstscan,2000.
