●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 present

●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)__．
（71）A．use-case modeling
B．class modeling
C．dynamic modeling
D．behavioral modeling
（72）A．collaboration diagram
B．sequence diagram
C．use-case diagram
D．activity diagram
（73）A．use-case modeling
B．class modeling
C．dynamic modeling
D．behavioral modeling
（74）A．use-case modeling
B．class modeling
C．dynamic modeling
D．behavioral modeling
（75）A．activity diagram
B．component diagram
C．sequence diagram
D．state diagram