听一段材料，回答下面几个小题。
What is the news about?
A. A traffic accident.
B. The weather.
C. A school bus.
What happened to the school bus?
A. It was burnt.
B. It was hit by a truck.
C. It didn't work.
How many students got hurt in the accident?
A. Fifty.
B. Fifteen.
C. Sixteen.
What did the police tell drivers to do?
A. To be more careful in driving.
B. To drive fast on the bad roads.
C. To be careful about students.