— Look at the sign “No smoking!” You smoke here.
— OK. .
A:can't; I won't
B:mustn't; I will
C:won't; It doesn't matter
D:mustn't; I won't
下列有关文学常识的叙述,正确的一项是( )
如图,在平面直角坐标系中,已知点A、B的坐标分别为(8,0)、(0,2 3 ),C是AB的中点,过点C作y轴的垂线,垂足为D,动点P从点D出发,沿DC向点C匀速运动,过点P作x轴的垂线,垂足为E,连接BP、EC.当BP所在直线与EC所在直线第一次垂直时,点P的坐标为____