—I wonder what I should learn in the future.

—You may learn art since you 　　　 painting and drawing. 

A．benefit from

B．have a gift for

C．look forward to

D．are tired of

数据流图是描述数据在软件中流动和变换的过程，而对数据流图中所包含的元素的定义则是

A．数据存储

B．数据加工

C．数据字典

D．数据定义