— Have you got the news about Jack? I haven't seen him for many years.

— He _____ in a company for two years. Now he is a teacher. [ ]

A. worked

B. has worked

C. had worked

D. would work

大量输注库存血后引起的并发症不包括（）

A.溶血反应

B.高血钾症

C.氨中毒

D.肺梗塞

E.低钙血症