选用所给句子完成对话。

A: Thank you for your coming first. 1            ?

B: I'm fourteen.

A: You're so young, but you're very helpful. 2            .

B: On the eleventh of May.

A: 3             ?

B: When the man was crossing the street, a car hit him and I was just there.

A: 4             ?

B: Of course not.

A: 5             ?

B: I called the police and the police car arrived quickly. We sent the man to

    hospital at once. He was saved at last.

A: You're brave enough. We'll reward you.

A. Were you afraid?

B. What did you see?

C. How old are you?

D. When did you see the accident?

E. What did you do then?

不可能出现紫绀的病情是

A．脑血栓形成
B．脑出血
C．左向右分流性先心病
D．感染性休克
E．极重度贫血