Many questions ________ at the meeting, but he answered none.   [ ]

A. came up      

B. raised      

C. were risen      

D. asked

来源于同一种植物的药物是（）

A.桑叶与桑寄生

B.柴胡与银柴胡

C.肉桂与桂枝

D.羌活与独活

E.茯苓与猪苓