He supposed he'd be late for the film The King's Speech ______ he ended up getting there ahead of time.[ ]

A. but          

B. or          

C. so              

D. for

引起亚急性感染性心内膜炎最常见的微生物是（）

A.肝炎病毒

B.真菌

C.草绿色链球菌

D.金黄色葡萄球菌

E.柯萨奇病毒