信息资源利用的基本手段是( )。

A．将信息资源作为可增值的有价资源

B．实现完全自动化的管理系统和控制系统

C．提高使用计算机的用户的水平

D．建立有效的信息系统

You can't imagine what a ___ scene it is to see a vast golden field of crops bathed in the golden sun,

with wind blowing gently ,birds singing sweetly in the trees and people harvesting crops happily. [ ]

A. fantastic

B. strange

C. quick

D. uncomfortable