分类：教育/科学-外语学习
问题：economystudy.whathavebeenthemain 
what have been the main factors in elaining why some planned economies have become mpre open or more like free market economies in recent years?? 
回答：某些计划经济近年来变得更加开放,也更象自由市场经济,有哪些因素可以用来解释这种现象呢?