表面麻醉最常用的药物是普鲁卡因。
参考答案：错
(2013·南京三模)—Sorry，it’s already 6 o’clock.I have to be off for an appointment.
—OK.________.
A．It couldn’t be better
B．You really have me there
C．Let’s call it a day
D．Take your time
为什么说家庭关系会影响到居住惯例？
