(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.

（75）应选（）。

A．Structured analysis

B．Information Engineering

C．Discovery Prototyping

D．Object-Oriented analysis

关于Riga-FeDe溃疡，不正确的是

A．专指发生于儿童舌腹的溃疡

B．与过短的舌系带和过锐的新萌中切牙长期摩擦有关

C．在舌系带两侧成对称分布

D．影响舌活动

E．是由于免疫功能异常引起的