在数据库设计中，用E-R图来描述信息结构但不涉及信息在计算机中的表示，它属于数据库设计阶段的是

A．需求分析

B．逻辑设计

C．概念设计

D．结构设计

— Iheard that there were a lot of shouts and screams at yesterday'sparty. It must have been terrible.    

— Oh, no. ____, I enjoyed every minute.    [ ]

A. In the end    

B. As a result    

C. On the other hand    

D. On the contrary