点M（a，a-1）不可能在[ ]
A．第一象限
B．第二象限
C．第三象限
D．第四象限
答案：B
对剥夺政治权利的罪犯由公安机关负责执行。( )
---I would never trust him again . He let me down.
----- _____________.
A,Neither would I B,So would I C,Nor was I D,So did I
