直线l1:y=k1x+b与直线l2:y=k2x在同一平面直角坐标系中的图象如图所示,则关于x的不等式k2x>k1x+b的解集为( )
A:x>3
B:x<3
C:x>﹣1
D:x<﹣1
极坐标方程(ρ﹣1)(θ﹣π)=0(ρ≥0)表示的图形是( )
Our head teacher is kind to us and she is like our mother, ____.