Tell me something more ________London. ( )
A: at
B:on
C:about
如图,直线a∥b,直线c是截线,如果∠1=50°,那么∠2等于( )
已知圆的极坐标方程为ρ=2cosθ,则该圆的圆心到直线ρsinθ+2ρcosθ=1的距离是____
发热对人体有害方面是( )
Be d____ to do what you like, and you will make it.
ABC ____ EF ____ HI ____ KL