补全对话。

A: Hey, Mike! Do you know the girl in the photo?

B: 1. ______ She is Paul's sister.

A: Oh, she looks very nice. 2. ______

B: Cindy Green.

A: 3. ______

B: She is twelve.

A: 4. ______

B: Yes, she does. She likes action movies.

A: I also like action movies, Let's go to the movies after school.

B: 5. ______

下列哪个不是软件工程的层次( )。

A．过程层

B．方法层

C．应用层

D．工具层