GRE作文是中国学生比较头痛的，经常准备很多时间最后还是只得到3.5。我之所以得到6分，个人认为我的文风比较淳朴扎实，有科学性，写的思路比较广(正、反、特)，字数也比较多(I800+、A700+)。
Finally, even if hiring older workers will reduce the need for supervision, the director
concludes too hastily that PPC will save money as a result. It is possible that older workers
command a higher wage than younger workers do. If so, these higher wages might offset
production gains and payroll savings accruing from reduced supervision.
In sum, the survey's statistical reliability and its relevance to PPC is questionable. To
strengthen the recommendation the director must provide clear evidence that in the printing
industry, and especially at PPC, older workers are more experienced or otherwise can work
more productively without supervision than younger workers. To better assess the argument, I
would need a detailed cost-benefit analysis that accounts not only for gains in productivity but
also for the possible impact of hiring only older workers on total payroll costs.
Argument 75
The following appeared as part of an article in a health magazine.
"A new discovery warrants a drastic change in the diets of people living in the United States.
Two scientists have recently suggested that omega -3 fatty acids (found in some fish and fish
oils) play a key role in mental health. Our ancestors, who ate less saturated fat and more
polyunsaturated fat, including omega -3 fatty acids, were much less likely to suffer from
depression than we are today. Moreover, modern societies---such as those in Japan and
Taiwan---that consume large quantities of fish report depression rates lower than that in the
223
United States. Given this link between omega -3 fatty acids and depression, it is important for
all people in the United States to increase their consumption of fish in order to prevent
depression."
The author of this article asserts that people who live in the U.S. should increase their fish
consumption in order to prevent depression. To support this assertion, the author cites the fact
that our ancestors, who were less likely to experience depression than we are today,
consumed more omega-3 fatty acids, which help prevent depression and are found in some
fish and fish oils. The author also cites the fact that in modern societies where people eat more
fish than we do the reported incidence of depression is comparatively iow. However, the
author's reasoning is problematic in several critical respects.
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