改革开放以来，我国城镇居民收入逐步拉开差距，并且这种收入差距还有进一步扩大的趋势，从而出现了在计划经济时期与改革开放初期从来没有过的消费的层次化和消费方式的多样化。尤其今年以来，在北京、上海、广州等一些大城市，消费呈现出周期性升级迹象，住房、服务、汽车、? Since the reform and opening up, the income of urban residents in our country has gradually widened the gap, and this income gap has further expanded. As a result, the level of consumption and the diversification of consumption patterns never seen before in the period of planned economy and reform and opening up have appeared. . In particular, since the beginning of this year, consumption has shown signs of cyclical upgrading in some big cities such as Beijing, Shanghai and Guangzhou. Housing, services, and automobiles?