下列哪种药物镇痛作用最强（）
A.盐酸吗啡
B.阿芬太尼
C.芬太尼
D.舒芬太尼
E.哌替啶
参考答案：D
_____ of danger in the street at night, she had to go home with a friend _____ her.
A．Being warned; accompanied
B．Having warned; accompanying
C．Warning; accompanying
D．Having been warned; accompanying
初查是决定应否立案的关键环节和必经步骤，初查的结果有（）
A.立案侦查
B.移送管辖
C.告知自诉
D.行政处理
E.不予立案
