Every year a lot of people are killed（死亡） on the roads（公路） in Great Britain. Every year about 200,000 people are hurt.（受伤）

There are many rules to make the roads safe（安全的）, but people do not always obey（遵守） the rules. What should people do to make the roads safe?

Remember this rule. In Great Britain, cars, buses and bikes must go on the left of the roads. In most other countries, cars, buses and bikes must go on the right.

Before going across the road, stop and look right and left. Then, if you are sure that the road is clear, it is safe to go across the road. If you see children or old people, help them to go across the road. We must teach children how to go across the road safely. We must always give them a good example. Small children must not play in the street.

46. If  we want to make the rods safe,           .

  A. everybody must be careful and obey the rules

  B. cars ,buses and bikes must go on the right

  C. don’t go across the roads too often

  D. roads must be clear

47. If you ride a bike in Great Britain, you must ride          .

  A. on the right of roads

  B. on the left of the road

  C. in the middle of the road

  D. behind the buses

48. Which is not right?

  A. Few people are killed on the road in Great Britain.

  B. In our country cars and buses and bikes go on the right.

  C. A lot of people are killed on the roads.

  D. Streets are not safe places for play.

49. “The road is clear.” means（意思是） that          .

  A. you can see very clearly on the road

  B. the road is very clean

  C. the road is very busy

  D. there is no car or bus running

50. The only safe way to go across the road is to        .

  A. look right                      B. look left

  C. look both ways, right and left      D. run across the road