GMAT考试写作例文224篇连载(七)
文章来源: 文章作者: 发布时间:2007-08-04 07:06 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
7. The following appeared in the health section of a magazine on trends and lifestyles.
“People who use the artificial sweetener aspartame are better off consuming sugar, since aspartame can actually contribute to weight gain rather than weight loss. For example, high levels of aspartame have been shown to trigger a craving1 for food by depleting2 the brain of a chemical that registers satiety3, or the sense of being full. Furthermore, studies suggest that sugars, if consumed after at least 45 minutes of continuous exercise, actually enhance the body’s ability to burn fat. Consequently, those who drink aspartame-sweetened juices after exercise will also lose this calorie-burning benefit. Thus it appears that people consuming aspartame rather than sugar are unlikely to achieve their dietary goals.”
Discuss how well reasoned... etc.
In this argument the author concludes that people trying to lose weight are better off consuming sugar than the artificial sweetener aspartame. To support this conclusion the author argues that aspartame can cause weight gain by triggering food cravings, whereas sugar actually enhances the body’s ability to burn fat. Neither of these reasons provides sufficient support for the conclusion.
The first reason that aspartame encourages food cravings is supported by research findings that high levels of aspartame deplete4 the brain chemical responsible for registering a sense of being sated (sated, sating充分满足), or full. But the author’s generalization5 based on this research is unreliable. The research was based on a sample in which large amounts of aspartame were administered; however, the author applies the research findings to a target population that includes all aspartame users, many of whom would probably not consume high levels of the artificial sweetener.
The second reason that sugar enhances the body’s ability to burn fat is based on the studies in which experimental groups, whose members consumed sugar after at least 45 minutes of continuous exercise, showed increased rates of fat burning. The author’s general claim, however, applies to all dieters who use sugar instead of aspartame, not just to those who use sugar after long periods of exercise. Once again, the author’s generalization is unreliable because it is based on a sample that clearly does not represent all dieters.
To conclude, each of the studies cited by the author bases its findings on evidence that does not represent dieters in general; for this reason, neither premise6 of this argument is a reliable generalization. Consequently, I am not convinced that dieters are better off consuming sugar instead of aspartame.


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1 craving zvlz3e     
n.渴望,热望
参考例句:
  • a craving for chocolate 非常想吃巧克力
  • She skipped normal meals to satisfy her craving for chocolate and crisps. 她不吃正餐,以便满足自己吃巧克力和炸薯片的渴望。
2 depleting ae23633b1a5c6c21ae0d93b205d84331     
使大大的减少,使空虚( deplete的现在分词 ); 耗尽,使枯竭
参考例句:
  • Regulations are outlawing certain refrigerants, such as chlorofluorocarbons, which contain ozone-depleting chemicals. 随后出台的政策禁用了部分制冷剂,如破坏臭氧层的氟氯碳化合物。
  • Aging, being a series of continual losses, can be keenly depleting. 老龄化,作为一个系列的连续亏损,可以清楚地消耗。
3 satiety hY5xP     
n.饱和;(市场的)充分供应
参考例句:
  • There is no satiety in study.学无止境。
  • Their presence in foods induces satiety at meal time.它们在食物中的存在诱导进餐时的满足感。
4 deplete Bm2z3     
v.弄空,排除,减轻,减少...体液,放去...的血
参考例句:
  • Most native mammal species have been severely depleted.大多数本地哺乳动物的数量都已经大大减少了。
  • Elastic collisions deplete very little of the electron's energy.弹性碰撞中电子减少的能量非常少。
5 generalization 6g4xv     
n.普遍性,一般性,概括
参考例句:
  • This sweeping generalization is the law of conservation of energy.这一透彻的概括就是能量守恒定律。
  • The evaluation of conduct involves some amount of generalization.对操行的评价会含有一些泛泛之论。
6 premise JtYyy     
n.前提;v.提论,预述
参考例句:
  • Let me premise my argument with a bit of history.让我引述一些史实作为我立论的前提。
  • We can deduce a conclusion from the premise.我们可以从这个前提推出结论。
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