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) .

75（）

A．activity diagram

B．component diagram

C．sequence diagram

D．state diagram

发热微恶寒，口渴咽干，干咳，舌干苔黄，脉浮数。证属

A．伤暑证

B．温燥证

C．凉燥证

D．内燥证

E．阴虚证