The details of the traffic accident is still clear in my mind.At first,a blue car ran southward at a high speed.At this moment,a little boy in raincoat was crossing the road.Then,the tragedy took place.The little boy was knocked down with his blood spreading everywhere.Right then,the police arrived to investigate the cause of the traffic accident.Lastly,the greatly-wound little boy was sent to the central hospital in the city.Meanwhile,most journalists from the city were reporting the news of the accident.