阅读下面的短文,并根据短文后的要求答题(请注意问题后的字数要求)。

       Safety in the  highway is not totally out of hands. Here are four ways we can protect ourselves when we travel.

       You are safer in a large car. People in small cars are injured more often and more severely than people traveling in large cars. Factories of small cars are strengthening their products’ safety, which helps. But the mix of large cars and small cars on the road is the main reason of the problem.    

    Being thrown into glass and metal car parts, or being thrown from the car, can really damage to you. That’s why safety belts should be worn. The safety belt’s main purpose is ___________if your car has a sudden crash with another vehicle or object, or if it rolls over. A belt can reduce the chance of fatal 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(正面的)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. But the protection provided by air bags is limited in side or rear crashes; 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. Drunk driving is the most serious problem. 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.

76.What is the main idea of the passage?  (Please answer within 10 words.)

                                                                              

77.Which of the sentences in the passage can be replaced by the following one?

Although they are effective, you should still wear your safety belts while driving.

                                                                              

78.Please fill in the blank with proper words to make the sentence completed. (Please answer within 6 words.)

                                                                              

79.Please translate the underlined sentence into Chinese.

                                                                              

80.What other suggestions can you offer? why? (Please answer within 30 words.)

                                                                              

       Exercise is one of the few factors with a positive role in long term maintenance of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to “light” beer and low - calorie bread than increase physical exertion. The Centers for Disease Control, for example, found that fewer than one - fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet.

  In rejecting exercise, some people may be discouraged too much by caloric - expenditure charts; for example, one would have to briskly(兴致勃勃地) walk three miles just to work off the 275 calories in one delicious Danish pastry (小甜饼). Even exercise professionals concede(承认) half a point here. “Exercise by itself is a very tough way to lose weight,” says York Onnen, program director of the President’s Council on Physical Fitness and Sports.

  Still, exercise’s supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight.

  If you have been sedentary (极少活动的) and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year’s time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight.

 

71.What is said about the average American in the passage?

       A.They tend to exaggerate(夸张)the healthful effect of “light” beer.

       B.They usually ignore the effect of exercise on losing weight.

       C.They prefer “light” beer and low-calorie bread to other drinks and food.

       D.They know the factors that play a positive role in keeping down body weight.

72.Some people dislike exercise because ________.

       A.they think it is physically exhausting

       B.they find it hard to exercise while on a diet

       C.they don’t think it possible to walk 3 miles every day

       D.they find consulting caloric-expenditure charts troublesome

73.“Even exercise professionals concede half a point here” (Line 3, Para. 2) means “They ________”.

       A.agree that the calories in a small piece of pastry can be difficult to work off by exercise

       B.partially believe diet plays a supporting role in weight reduction

       C.are not fully convinced that dieting can help maintain one’s new weight

       D.are not adequately informed of the positive role of exercise in losing weight

74.What was confirmed by the Boston University Medical Center’s study?

       A.Controlling one’s calorie intake is more important than doing exercise.

       B.Even occasional exercise can help reduce weight.

       C.Weight reduction is impossible without exercise.

       D.One could lose ten pounds in a year’s time if there’s no increase in food intake.

75.What is the author’s purpose in writing this article?

       A.To justify the study of the Boston University Medical Center.

       B.To stress the importance of maintaining proper weight.

       C.To support the statement made by York Onnen.

       D.To show the most effective way to lose weight.

 

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