Object-oriented analysis (OOA) is a semiformal specification technique for the object-oriented paradigm. Object-oriented analysis consists of three steps. The first step is (71) . It determines how the various results are computed by the product and presents this information in the form of a (72) and associated scenarios. The second is (73) , which determines the classes and their attributes, then determines the interrelationships and interaction among the classes. The last step is (74) , which determines the actions performed by or to each class or subclass and presents this information in the form of (75) .

（74）处填（）。

A. static modeling

B. use-case modeling

C. dynamic modeling

D. class modeling

病员方不服医疗事故技术鉴定委员会鉴定结论提起诉讼的应诉对象是：（）。

A.医疗单位

B.当事医护人员

C.鉴定委员会

D.卫生行政部门