The visitors here are greatly impressed by the fact that________people from all walks of life are working hard for________new Jiangsu.                            (2010·江苏，21)

A．/；a

B．/；the

C．the；a

D．the；the

企业电子文件管理是指对企业电子文件的形成、（）及长期保存过程进行高效和系统控制的管理。

A.接收

B.维护

C.利用

D.处置