_______ I went to the South Lake in Hanzhong, I was deeply impressed with its beautiful scenery.

A．For the first time

B．The first time

C．At first

D．It was the first time

具有温经止血、温中止痛功效的药物是（）

A.附子

B.炮姜

C.干姜

D.生姜

E.血余炭