π0+3-2=______．
原式=1+19=119．故答案为119．
At the sight of the policeman _____from behind the door.
A．did the boy rushed out
B．rushing out was the boy
C．out rushed the boy
D．the boy was rushing out
王芳的三门功课，平均成绩93分，如果不算数学成绩，两门课的平均成绩比三门课的平均成绩要低一分，由此可知，王芳的数学成绩是多少( )
A．94
B．95
C．93
D．92
