23. It. proves that ________ when two cars hit at 30mph.
  A. cars won’t be pulled to a workshop
  B. people will not be knocked seriously
  C. it’s like diving into the water from 10 meters high
  D. it may cause a serious accident without protection
24.We can learn from the passage that_______ when someone is “thrown clear”.
  A. his life will be saved         B. nothing will be belt in the car

C.it turns out a better ending     D. it increases the chances of dying
25.The passage mainly tells us that people should_________.
A. free themselves when in danger.     B. wear the safety belts while driving
C. drive a car at the right speed.       D. have a clear head in an accident