People are often killed while ccrossing73children the road. Most of them are old people an

People are often killed while ccrossing 73children  the road. Most of them are old people and cbefore 74quickly . Old people are often killed because they are careless. People should look and listen bstops 75hard  they cross the road. A car, a truck or a bus can’t stop very qsafe 76both  if it is going very fast. It will travel many meters before it sto 77lights . Pedestrian(行人)don’t know this. They think that a car can stop right away. It is h　 78　  for a pedestrian to know how fast a car is traveling. The only s　 79　 way to cross the road is to look at b　 80　  ways, right and left. The correct way to cross the road is t　 81　  walk quickly when the traffic l　 82　  turn green.