A:He didn't play soccer.
B:He didn't watch TV.
C:He didn't do his homework.
已知点P(5,-2)与点Q关于y轴对称,则Q点的坐标为( )
已知点P(a,a+2)在直线y=2x-1上,则点P关于原点的对称点P′的坐标可表示为 ( )
你告诉老师,你的理想是成为一名工程师,你说:____