阅读下面短文，判断句子正误。正确的写“T"，错误的写“F"。

Boy: Who's that man?

Girl: He's my father. He works in a school.

Boy: What does he do?

Girl: He's a math teacher.

Boy: How does he go to work?

Girl: He usually goes to work by bike.

( ) 1. The man is the girl's uncle.

( ) 2. He is a teacher.

( ) 3. He works in a library.

( ) 4. He teaches Chinese.

( ) 5. He goes to work by bike.

MVC是一种复合设计模式，由下面哪些设计模式组成（）

A.观察者

B.单例

C.策略

D.合成