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　　Every day some people are killed while they are crossing the roads. __1__ of these people are old people and children. Old people are often killed（被殺死）because they can't see or __2__ very well. Children are killed because they are not __3__. They forgot to look and listen before they __4__ the roads.

　　A car or a bus can't stop __5__. If a car is going very fast, it will travel many metres __6__ it stops. Some people don't always understand this. They think a car can stop __7__ a few seconds. It is difficult to __8__ how fast a car is moving. The only way to cross the roads safely（安全地）is to look __9__ ways, right and left. Then if the roads are __10__, you can cross them.

　　Every one of us must be more careful when you are crossing a road no matter（無論）you are a driver or a passer-by（過路人）. And all the drivers must drive more carefully and slowly when they are driving.

綜合填空：用方框內(nèi)所給詞的適當(dāng)形式填空，使短文意思完整、正確。（每小題1分）

     People are often killed while crossing the road. Most of these people are old people and children. Old people are often killed because they usually cannot see or hear very well. Children are often killed because they are not careful. They have to look and listen before they cross the road.

     A car, a truck or a bus cannot stop very quickly. If the traffic is going very fast, It will travel many metres before it stops. People don't always understand this. They think a car can stop within(在……之內(nèi))a few seconds (秒) . The faster a car is traveling. The longer it takes to stop.

     The only safe way to cross the road is to look both sides, right and left. Then if the road is clear, it is safe to cross. The right way to cross is to walk quickly. It is dangerous to run. If people run across the road, they may fall down.

1. ______are often killed when they cross the road.

A. Old people        B. Children          C. Young men D. Both old people and children

2. Old people are often killed when crossing the road because ______

A. they can't see or hear clearly  B. they are not careful

C. they often run               D. they like talking

3. It is ______ for a driver who drives quite fast to stop his car when he finds something wrong one meter in front of him suddenly.

A. easy          B. bad    C. possible         D. difficult

4. When we cross the road. we have to ______.

A. run                               B. look carefully and walk quickly

C. ask somebody to help us        D. look for a policeman

5. Which is wrong?

A. It is Safe to run across the road

B. Children are often killed because they aren't careful

C. Ira car goes very fast, it can’t stop quickly.

       D. Look both ways, right and left, before you cross the road.