The boy doesn’t sing ________ the others, but he dances best of all.

A．so well as

B．as good as

C．more worse than

D．more better than

具有杀虫消积、行气利水、截疟功效的药物是（）

A.使君子

B.五加皮

C.槟榔

D.鸦胆子

E.草果