2. Safety belts “trap” people in cars that are burning or sinking in water. Sorry again, but studies show that people knocked unconscious(昏迷) due to not wearing safety belts have a greater chance of dying in these accidents. People wearing safety belts are usually protected to the point of having a clear head to free themselves from such dangerous situations, not to be trapped in them.

　　3. Safety belts aren’t needed at speeds of less than 30 miles per hour. When two cars traveling at 30 mph hit each other, an unbelted driver would meet the windshield with a force equal to diving headfirst into the ground from a height of 10 meters.

　　25. Why did Elizabeth say to her father, “But, Dad, you can’t be healthy if you’re dead”?

　　A. He was driving at great speed.

　　B. He was running across the street.

　　C. He didn’t have his safety belt on.

　　D. He didn’t take his medicine on time.

　　26. Why is it dangerous to be “thrown clear” of a serious accident?

　　A. You may get aught in the car door

　　B. You may be knocked down by other cars

　　C. You may find it impossible to get away from the seat

　　D. You may get seriously hurt being thrown out of the car

　　27. What is the advice given in the text?

　　A. Never drive faster than 30 miles an hour

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