对民族资本主义的发展有促进作用的是( )①洋务运动 ②辛亥革命 ③收回利权运动 ④爱国心的驱使
A:①②③④
B:②③④
C:①②④
D:①②③
双曲线x24-y2=1的渐近线方程为( )
— Shall Brown come and play computer games?
— No, ________ he has finished his homework.