MaybetenyearoldElizabethputitbestwhenshesaidtohe...

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問題詳情：

Maybe tenyearold Elizabeth put it best when she said to her father，“But，Dad，you-can’t-be-healthy-if-you’re-dead.”Dad，in a hurry to get home before dark so he could go for a run，had forgotten to wear his safety belt—a mistake 75% of the US population makes every big question is why.

There have been many myths about safety belts ever since their first appearance in cars some forty years following are three of the most common.

Myth Number One：It’s best to be “thrown clear” of a serious accident.

Truth：Sorry，but any accident serious enough to “throw you clear”is also going to be serious enough to give you a very bad chances are you’ll have traveled through a windshield(擋風玻璃) or door to do ies show that chances of dying after a car accident are twentyfive times greater in cases where people are “thrown clear”．

Myth Number Two：Safety belts “trap” people in cars that are burning or sinking in water.

Truth：Sorry again，but studies show that people knocked unconscious(無知覺的) due to not wearing safety belts have a greater chance of dying in these le wearing safety belts are usually protected to the point of having a clear head to free themselves from such dangerous situation，not to be trapped in them.

Myth Number Three：Safety belts aren’t needed at speeds of less than 30 miles per hour(mph)．

Truth：When two cars traveling at 30 mph hit each other，an unbelted driver would meet the windshield with a force equal to diving head first into the ground from a height of 10 meters.

18．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.

19．The reason Father was in a hurry to get home was that he ________.

A．wasn’t feeling very well

B．hated to drive in the dark

C．wanted to take some exercise

D．didn’t want to be caught by the police

20．According to the text，to be “thrown clear”of a serious accident is very dangerous because you ______.

A．may be knocked down by other cars