下列计算中,错误的是( )
A:8x2+3y2=11x2y2
B:4x2﹣9x2=﹣5x2
C:5a2b﹣5ba2=0
D:3m﹣(﹣2m)=5m
我国最长的内流河是( )
— ____ your brother like swimming?
— No, ____.