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4种形式考查对主旨大意的把握之3 文章的写作目的
解题技巧：
写作目的是文章的主旨。任何文章都有一个写作目的。如果说文章的主题是客观地存在与文章中的，那么文章的写作目的则代邮明显的作者的主观色彩。判断写作目的，必须弄清楚作者对于文章主题（人或事物）的态度。
练习：
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 less 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 the 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 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.
Q: 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.
【解析】选D。文章第一句是全文的主题句：锻炼是长期保持合理体重的少数几个有效手段之一。后面讲了人们对于这一点的无知。第二段讲不进行锻炼减肥的人的效果并不好。最后一段说锻炼其实很简单，走路就可以达到目的。所以文章的写作目的是D“介绍最有效的减肥方法。”
n. 董事，经理，主管，指导者，导演
