GRE考试形式：中国大陆地区、香港、澳门、韩国目前执行分开考试的形式。由机考（分析性写作）和笔试（语文、数学）组成。
This letter concludes that to increase farm revenue this country's farmers should replace
their sugar crops with peanuts. To support this assertion, the letter's author claims that demand
for sugar is sure to decline due to a growing awareness of the health hazards of eating too
much sugar. The author also cites the fact that in the nearby country of Palm increased peanut
production has resulted in increased revenue for farmers. However, the author's argument
relies on several poor assumptions, and is therefore unpersuasive as it stands.
A threshold problem with the letter involves the new research that the author cites to support
his condusion. The author fails to indicate whether consumers are in fact aware of the new
research about the harmful effects of eating too much sugar, or whether consumers eat too
much sugar in the first place. If consumers are unaware of the research, or if they do not
currently eat too much sugar, then this research lends no support to the author's assertion that
sugar consumption is likely to decline as a result of the new research.
Secondly, the argument unjustifiably assumes that growing consumer awareness of sugar's
health hazards will cause consumers to not only decrease sugar consumption but also
increase peanut consumption. Common sense informs me otherwise, especially considering
the addictive quality of sugar. In fact, the author provides explicitly that peanuts are low in
sugar, suggesting that peanuts are a poor substitute for sugar.
Thirdly, the author's daim that farm revenues will increase should farmers replace sugar
crops with peanuts relies on certain dubious economic assumptions. One such assumption is
that the market price of peanuts will be sufficiently high to compensate for lost revenue from
current sugar sales. Another is that the supply of peanuts will suffice to provide farmers with
sufficient revenue. Absent evidence comparing the market price of sugar to that of peanuts, as
well as evidence about the capacity of this country's farms to grow peanut crops, it is
impossible to assess the author's assertion that replacing sugar crops with peanuts will
increase farm revenues.
Finally, the author's reliance on the fact that peanut-farming revenues in neighboring Pain
have increased is problematic in two respects. First, the analogy depends on the assumption
that dietary tastes of consumers in both countries are similar. However, it is entirely possible
that consumer demand for peanuts in Pain would be higher than that in this country in any
event. This would explain why, in Palin, demand has met increased production, and therefore
why Palin's peanut-farming revenues have increased. The analogy also depends on the
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assumption that environmental conditions in both countries equally support peanut crops. If
they do not, then the author cannot justifiably rely on the profitability of Pain's peanut farms to
conclude that peanut farms in the author's country would be just as profitable. 感谢您阅读《GRE作文范文大全（136） 》一文，出国留学网(liuxue86.com)编辑部希望本文能帮助到您。