●__(71)__analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems.Ultimately，the system models become the__(72)__for designing and constructing an improved system.__(73)__is such a technique.The emphasis in this technique is process-centered.Systems analysts draw a series of process models called __(74)__.__(75)__is another such technique that integrates data and process concerns into constructs called objects.
（71）A．Prototyping
B．Accelerated
C．Model-driven
D．Iterative
（72）A．image
B．picture
C．layout
D．blueprint
（73）A．Structured analysis
B．Information Engineering
C．Discovery Prototyping
D．Object-Oriented analysis
（74）A．PERT
B．DFD
C．ERD
D．UML
（75）A．Structured analysis
B．Information Engineering
C．Discovery Prototyping
D．Object-Oriented analysis