1 . 听下面一段较长对话，回答以下小题。
1. What is the relationship between the speakers?

A．Doctor and patient.

B．Policeman and witness.

C．Teacher and student.

2. Which part of the body did Mr. White get hurt?

A．His back.

B．His legs.

C．His arms.

3. How did the accident happen?

A．Jessie’s mother didn’t stop in time.

B．Mr. White ran through the red light.

C．The traffic lights went wrong.