补全对话。根据上下文的意思，把下列对话补充完整。

A: Hello, Nice to meet you!

B: 1._________________________! How long have you been in Zhuzhou?

A: For half a year.

B: 2._________________________?

A: It is a beautiful city.

B: Why did you come to study here?

A: Because my father got a job here.

B: Oh, 3.________________________?

A: He is a policeman.

B: Cool, I want to be a policeman, too.

4.________________________ ?

A: I want to be a singer.

B: 5.________________________?

A: Because I like singing very much.

促进机体产热最重要的激素是（）

A.肾上腺皮质激素

B.肾上腺髓质激素

C.胰岛素

D.甲状腺激素

E.性激素