如果你编写《西安事变》剧本，下列哪一位历史人物不可能出现在西安谈判的场景中[ ]
A．毛 * *
B．蒋介石
C．张 * *
D．杨虎城
答案：A
While private cars are bringing us________, they may also cause more traffic accidents and pollution.[ ]
A. administration
B. credit
C. convenience
D. movement
自定位支承
