Once in a physics class，the teacher asked students，“Why do we have brakes(刹车）in our cars?” Soon，students gave different answers. A student stood up and answered，“Sir，to 1 the car.” Another one said，“To slow down the 2 of the car.”
However，3 of the answers was the same as the teacher's. Then he said，“All of your answers are right. But in my opinion，the brakes in the car make us able to drive much 4.”
“If the car has no brakes，how fast are we ready to drive? It is the brakes in the car that help us drive fast and safely.” Listening to this，the whole class was silent 5 no one had thought about this answer.
At the same time，there are many such “brakes” in our life，which 6 to stop us. For example，our parents may ask us about decisions in life. Their questions or 7 may be seen as “brakes” which stand in our way. But we can see them as our supporters which can protect us. Sometimes，we 8 stop，so that we can do better.
In fact，it is the “brakes” in life that help us a lot. 9 these “brakes”，we could lose our direction or get into danger. So we need to understand that “brakes” in our life do not mean pushing us back 10 making us move forward more quickly than before.
1. A. improve B. keep C. stop D. change
2. A. time B. speed C. direction D. condition
3. A. all B. some C. none D. both
4. A. slow B. fast C. slower D. faster
5. A. until B. because C. if D. when
6. A. begin B. decide C. pick D. seem
7. A. advice B. explanation C. situation D. review
8. A. have to B. decide to C. wait to D. forget to
9. A. From B. With C. Without D. On
10. A. and B. but C. or D. so

1~5. CBCDB 6~10. DAACB