组织所在地的区域关系对象被称为（）
A.内部公众
B.顾客公众
C.媒介公众
D.社区公众
参考答案：D
—Would you like to go swimming with me this afternoon?
—_______, but I have a lot of homework to do.
A．I’d love to
B．Yes, let’s go
C．No, I won’t
D．It doesn’t matter
硬膜外麻醉时产生全脊麻的发生率平均约（）
A.0.005%
B.0.01%
C.0.024%
D.O.015%
E.O.045%
