There is a shortage of teachers in Western China, and it will fall on the 80s and 90s generations to           this responsibility.

A．take on

B．step up

C．make up

D．apply for

创制独活寄生汤的医家是（）

A.孙思邈

B.王焘

C.陈延之

D.范汪

E.巢元方