补全对话。

A: Excuse me. What day 1_____ yesterday?

B: It was Sunday.

A: 2_____ you very busy?

B: Yes, I was very busy.

A: What 3_____ you do?

B: I did my homework first. Then I 4_____  to the park with my parents.

A: How did you go there?

B: By bus. We 5_____ a good time in the park.

A: Where did you have lunch?

B: In the park. We had milk and bread for lunch.

胚胎期和婴儿发育早期机体严重碘缺乏可引起（）

A．地方性砷中毒 

B.铊中毒 

C．地方性氟病 

D．痛痛病 

E．地方性克汀病