[a习作temp] Argument170 快考试了大家帮忙看看 [复制链接]

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发表于 2006-3-1 15:11:12 |只看该作者 |倒序浏览

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TOPIC: ARGUMENT170 - For the past five years, consumers in California have been willing to pay twice as much for oysters from the northeastern Atlantic Coast as for Gulf Coast oysters. This trend began shortly after harmful bacteria were found in a few raw Gulf Coast oysters. But scientists have now devised a process for killing the bacteria. Once consumers are made aware of the increased safety of Gulf Coast oysters, they are likely to be willing to pay as much for Gulf Coast as for northeastern Atlantic Coast oysters, and greater profits for Gulf Coast oyster producers will follow.
WORDS: 424       TIME: 0:25:29       DATE: 2006-3-1

The argument seems well-presented and plausible at first glance, but a closer scrutiny reveals it suffers sevreal critical logic flaws.

First, the fact theat harmful bacteria were found in a few raw Gulf Coast oysters does not necessarily explain consumers in California have been willing to pay twice as much for the ones from the northeastern.  There might be other possible reasons for consumers' preference of northeastern ones.  It is entirely possible that it is because northeastern ones have a more delicious taste that consumers buy them depite the high price.  It is also possible that the transportation of northeastern ones is very convenient and thus consumers could buy the fresh ones no matter how much money they spend.  Moreover, the author does not provide what percent of GC oysters were found harmful bacteria and, more importantly, whether the bacteria will be killed after boiling.  Without considering and ruling out these possibilities, it is unwarrented to conclude that GC oysters are unwelcomed because of bacteria.

Secondly, the author does not provide any evidence of the process of killing bacteria of GC oysters.  The author does not tell us how the process is performed, whether the bacteria will be wholly killed and whether some harmful chemicals will be left after the process.  Perhaps, the bateria of GC oysters is totally killed while more harmful chemicals are left, and in a result, the GC oyster is not as delicious as before.

Finally, there are many other factors that affect the profits of GC oysters, not only bacteria.  The current and future production of oysters, the manner of getting more oysters etc. all affect the profits. It is entirely possible that the consumers have consumed AC oysters for years and do not like the tast of GC ones.  Also, the author does not tell us whether the production of GC oysters will be in the future only according to the production of past five years.  Perhaps, GC oysters are not available in the future because they are pecious species of which total number is limited.  Lack such evidence, the author could  not persuade us that the great profits of GC oysters will follow in the future.

In sum, the agrument is ill-conceived and wholly unpersuasive.  To strengthen the argument, the author should provide more evidence why AC oysters are favored more than GC ones as well as the process of killing bacteria of GC oysters.  To better assess the argument, the author should tell us more about how mnay GC oysters could be produced in the further.

[ 本帖最后由 staralways 于 2006-3-1 15:37 编辑 ]