对建设项目的信息进行分类应遵循( )原则，从而使项目信息分类体系能满足不同项目参与方高效信息交换的需要。

A．稳定性
B．兼容性
C．逻辑性
D．可扩展性

Rapid application development (RAD) systems purport to lighten the developer’s (46) by making it easy to program an application with simple intuitive steps.
RAD tools (47) the developer everything needed to construct a fully functional application quickly and easily. They make short work of modifying the developed product to (48) changes after the program is finished. Applications developed with RAD tools are constructed as they are envisioned. As an application’s real usefulness (49) , the developer armed with RAD tools should be able to (50) on new features with little fuss.

A．accommodate

B．account

C．decrease

D．eliminate