题干
It's _______ to point at others with your chopsticks at table.
A：polite
B：rude
C：correct
D：good
答案(点此获取答案解析）
B
It's _______ to point at others with your chopsticks at table.
A：polite
B：rude
C：correct
D：good
轴的距离是4，到 
轴的距离是3，那么点P的坐标为