He is very good at carpentering, though _______. [ ]

A. he was very young          

B. very young

C. he very young              

D. is very young

以上哪项为九味羌活汤的功效（）

A.祛风寒湿，兼清里热

B.祛风止痛，清利头目

C.祛风清热，养血活血

D.发汗解表，兼清里热

E.发汗解表，祛风祛湿