A.乐于助人,马上办理B.防止被骗,委婉拒绝C.略问情况,答应办理D.暗骂骗子,悄悄报警
A.7B.10C.8D.9
A.(-4,8,-4)B.(4,-8,4)C.(2,-4,2)D.(-2,4,-2)