● Object-oriented analysis （OOA) is a semiformal specification technique for the object-or

● 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 determine 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