社会治安综合治理有政治的、经济的、行政的、教育的、文化的、法律的等手段和措施。 ( )
参考答案：对
采购需求描述包括（）
A.售后服务
B.运输方式
C.检验方式
D.材料供应状况
The country life we ______. The differences between rural and urban areas are disappearing.
A．were used to have changed
B．used to change
C．used to changing
D．were used to has changed
