—I will go to Hong kong. I'm looking forward to __________ my grandfather .
A:visit
B:will visit
C:visited
D:visiting
如图,在平面直角坐标系中,线段AB的端点坐标为A(-2,4),B(4,2),直线y=kx-2与线段AB有交点,则k的值不可能是( )
如图所示,请画出入射光线经过凸透镜后的折射光线.