A:1N、2N、1N
B:1N、0、1N
C:0、1N、0
D:1N、1N、0N
若|x﹣ 12 |+(y+2)2=0,则(xy)2015的值为( )
— Could we practice playing the guitar in the hall, Sir ? —No , ___________ you have the principal's (校长) note.