32. Though she began her ___ by singing in a local pop group, she is a famous Hollywood movie star.

A) employment C) occupation

　B) career　　　 D) profession

31. The machine looked like a large, ___, old-fashioned typewriter.

A) forceful　 C) intense

B) clumsy　 D) tricky

30. What is the author’s purpose in writing this article? To ___.

A) justify the study of the Boston University Medical Center

　B) stress the importance of maintaining proper weight

　C) support the statement made by York Onnen

　D) show the most effective way to lost weight

Part III　 Vocabulary (20 Minutes)

Directions: There are 30 incomplete sentences in this part. For each sentence there are four choices marked A), B), C) and D). Choose the ONE answer that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the centre.

29. 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.

28. “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 sufficiently informed of the positive role of exercise in losing weight

27.Some people dislike exercise because they ___.

A) think it is physically exhausting

　B) find it hard to exercise while on a diet

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

　D) find consulting caloric-expenditure charts troublesome

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

A) They tend to exaggerate 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.

25.It can be inferred from last paragraph that scientists ___.

A) are puzzled by the mystery of forest pollution

　B) feel relieved by the use of unleaded gasoline

　C) still consider lead pollution a problem

　D) lack sufficient means to combat bad pollution

Passage Four

Question 26 to 30 are based on the following passage.

　　 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 walk three miles just to work off 275 calories in one delicious Danish pastry(小甜饼). Even exercise professionals concede 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.

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24.The authors of the Ambio study have found that ___.

A) forests get rid of lead pollution faster than expected

　B) lead accumulations in forests are more difficult to deal with

　C) lead deposits are widely distributed in the forests of the US

　D) the upper layers of soil in forests are easily polluted by lead emissions

23.How did scientists discover the source of lead pollution in Greenland?

A) By analyzing the data published in journals like Nature and Ambio.

　B) By observing the lead accumulations in different parts of the arctic area.

　C) By studying the chemical elements of soil and snow in Northeastern America.

　D) By comparing the chemical compositions of leaded gasoline used in various countries.