Me
My name is Li Hua. I am 8 years old. I like sports. I have lots of sports at weekends. I love play table tennis very much, and I like swimming, too. I have a big family. We all like each other.
已知点A（5，m）与点B（n，﹣4）关于原点对称，那么点P（m，n）的坐标是（ ）
