Being thrown into glass and metal car parts, or being thrown from the car can really hurt or even kill you.__3__The safety belt's main purpose is to pull you back if your car has a sudden crash with another vehicle or object, or if it rolls over. A belt can reduce the chance of deadly injury by 45% and the chance of serious injury by 50%.

　　Air bags are important. More than half of all new cars sold have air bags.Air bags provide protection in frontal crashes—the type of crash that kills the most drivers—when they are also wearing safety belts. Most people are demanding air bags in the cars they buy.__4__Effective as they are, they can't take the place of safety belts.

　　Drunk driving crashes are less likely to happen if you don't drink.__5__Many people have realized that drunk driving can lead to death and injury, prison time and other results. There are movements to strengthen penalties (处罚)for drinking and driving.

　　A．How to drive safely?

　　B．You are safer in a large car.

　　C．How to protect ourselves in the highway?

　　D．Air bags are not installed in all cars.

　　E．That's why safety belts should be worn.

　　F．Drunk driving is the most serious problem.

　　G．But the protection provided by air bags is limited in side or rear crashes.

　　答案与解析

　　本文讲述了高速公路上的安全建议。

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