在探究“馒头在口腔中的变化”时，进行了以下三种处理．请回答下面的问题．

从方框中选择最佳选项完成对话，有两项多余。

A. It doesn't hurt any more.

B. When did it happen?

C. Was it serious?

D. How careless!

E. I'm sorry to hear that.

F. I hurt my finger when I was cutting a watermelon.

G. Do you know how to give first aid?

A: I had an accident yesterday.

B: ____ How did it happen?

A: ____

B: Bad luck! ____

A: No, but my finger hurt!

B: How do you feel now?

A: Much better. ____

B: You must be careful when you use a knife next time.

A: I will. My mother and father had warned me, but I didn't listen.

B: ____

A: Er, I won't cut watermelons with knives anymore.

B: Oh, don't be scared. It's OK if you're careful.

以下属于生物的是（　　）

读我国某地区图，完成下列各题。