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（1）.  It  determines  how  the  various  results  are  computed  by  the  product  and  presents  this information in the form of a  （2）  and associated scenarios. The second is  （3）  , which determines the classes and their attributes, then determines the interrelationships and interaction among the classes. The  last step is  （4）  ,  which determines  the  actions  performed  by or to each class or subclass and presents this information in the form of  （5）  .
（1）A、use-case modeling  
B、class modeling  
C、dynamic modeling  
D、behavioral modeling
（2）A、collaboration diagram  
B、sequence diagram  
C、use-case diagram 
D、activity diagram
（3）A、use-case modeling  
B、class modeling  
C、dynamic modeling  
D、behavioral modeling
（4）A、use-case modeling  
B、class modeling  
C、dynamic modeling  
D、behavioral modeling
（5）A、activity diagram  
B、component diagram  
C、sequence diagram  
D、state diagram