—What were you doing at this time yesterday?    

—I _____ basketball with my friends.     [ ]

A. was playing

B. had played

C. have played

D. played

会计信息化的发展快慢与企业单位（）的改造与创新速度成正比。

A.会计软件

B.会计电算化

C.会计信息系统

D.管理思想