It's 7 o'clock now. Tom           dinner at home.    [ ]

A. is having                

B. has        

C. have                  

D. having

具有开窍醒神，活血通经，消肿止痛功效的药物是（）。

A.苏合香

B.牛黄

C.麝香

D.远志

E.石菖蒲