“看景不如听景”体现了导游语言运用原则中的（ ）。

A．清楚

B．生动

C．灵活

D．正确

（）analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the（）for designing and constructing an improved system.（）is such a technique. The emphasis in this technique is process-centereD. Systems analysts draw a series of process models called（）.（）is another such technique that integrates data and process concerns into constructs called objects.

（） is another such technique that integrates data and process concerns into constructs called objects.

A．Structured analysis

B．Information Engineering

C．Discovery Prototyping

D．Object-Oriented analysis