【要求】
題目：減肥。請根據(jù)以下要點寫一短文，談?wù)勀銓p肥的看法。
節(jié)食（diet. n.）與慢跑（jogging）是兩種效果不同的減肥方法。
慢跑經(jīng)濟而有效；節(jié)食效果不佳。
減肥如走極端則很危險。
【范文】
Losing Weight
Many fat people want to lose weight and to be younger and slimmer. They often choose two ways----diet and jogging. Their effects are different.
Jogging is the easiest and cheapest way of shaping the body. For the price of a good pair of running shoes, anyone can join the race anywhere.
Dieting, too, has become a common way. People eat very little everyday, and the food they eat cannot supply as much nutrition as the body needs.
Both jogging and dieting, carried to extremes, can be harmful. Above all, common sense should be the keystone for any dieting and exercise scheme.
It is true that the principal part of beauty lies in decent motion.
【評語】
這是一篇有提示語的作用文，因此，一般要求在文章的段首以中心句的形式點明要點。另外，提示性的作用，切忌主觀修改提示要求。議論文的優(yōu)點就在于緊扣提示，層層展開，干凈利落，正反相稱，使文章顯得公允、完整。