DDAC
1B项首先排除(傻子才装富)A C两项意思相近,排除,选D
2a process in which prices rise and fall in response to relative demands of consumers and supplies offered by seller-producers。很明显选D
3BC选项均包括在private priority,D选项是certain rights,所以选A
4首先排除A B(该文章并非介绍生产流程或者购物指导)很明显,PROfits的中心在文章中出现并不多,排除D