非火山型张裂边缘的特征如何？

______ of danger on the road at night ,the girl had to go home with a friend _______ her.

A．Being warned; accompanied

B．Having warned; accompanying

C．Warning; accompanying

D．Having been warned; accompanying

写出一个解为 x=2 y=-1 的二元一次方程组是______．

读表：《问候语的变迁》

语言是一种味道，人们依靠它传情达意；语言更是一面镜子，人们从中可以看到时代的身影。问候语的变迁体现的哲学道理是

A．社会意识具有相对独立性

B．社会意识对社会存在有反作用

C．社会意识决定社会存在

D．社会意识是变化发展的

—Any information about your son?

—No. If only I ______ those tough words to him.

A．didn't say

B．hadn't said

C．shouldn't have said

D．couldn't have said

美国药师职业道德规范是指导药剂师与

A．病人、同行、其他卫生人员和公众定系的准则
B．病人、同行关系的准则
C．同行、其他卫生人员关系的准则
D．病人、其他卫生人员关系的准则
E．其他卫生人员和公众的关系的准则