Which of the following comprehensively describes the main differences between the STAF framework and the dynamic framework （ ） 以下（ ）全面描述了STAF框架与动力学框架的主要差别
A．Specific regions are concerned in the STAF framework, while matter particles are concerned in the dynamic framework STAF关注特定区域,而动力学方法关注物质质点
B．The trade between regions needs to be considered only in the STAF framework rather than in the dynamic framework STAF考虑了贸易,而动力学方法不需要考虑贸易
C．The material in-use stock is considered in the STAF framework but in the dynamic framework STAF考虑了物质使用存量(In-use Stock), 而动力学框架未考虑
D．The waste management and recovery is structured in the STAF framework while it is hidden in the dynamic framework STAF框架显化了废物回收与处置,而动力学框架隐含了该阶段
E．All the above four items 以上四项都是
