Now Robert, a football fan in our class, ____ rome of his daily allowance given by his parents in order to buy a new football.

A．is giving away

B．is throwing away

C．is putting away

D．is taking away

在利用结构化开发生命周期法开发系统时，在整个开发过程中最重要的环节是______。

A．需要分析和需要定义
B．可行性分析和逻辑设计
C．逻辑设计和物理设计
D．逻辑设计和系统实施