I thought he would get excited at the news, but much to my surprise, he was very     .[ ]

A. fierce    

B. sharp    

C. calm      

D. positive

溃疡病急性穿孔后最严重的后果是（）

A.引起急性弥漫性腹膜炎

B.引起胃和十二指肠周围脓肿形成

C.引起肠粘连

D.引起小网膜急性炎症

E.引起慢性包裹性腹膜炎