[a习作temp] argument 45 下周就考试了，求pp [复制链接]

mitchelllc
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发表于 2010-8-6 14:30:40 |只看该作者 |倒序浏览

本帖最后由 mitchelllc 于 2010-8-6 15:56 编辑

下周就要去武汉考试了，水平很菜，希望大家猛拍，谢谢啦～

45. The following appeared as an editorial in a wildlife journal.
"Arctic deer live on islandsin Canada's arctic region. They search for food by moving over ice from islandto island during the course of a year. Their habitat is limited to areas warmenough to sustain the plants on which they feed, and cold enough, at least someof the year, for the ice to cover the sea separating the islands, allowing thedeer to travel over it. Unfortunately, according to reports from local hunters,the deer populations are declining. Since these reports coincide with recentglobal warming trends that have caused the sea ice to melt, we can concludethat the decline in arctic deer populations is the result of deer being unableto follow their age-old migration patterns across the frozen sea."

In this argument the author claims an editorial showing that the total amount of arctic deer is descending . To support this assertion the author cites reports from local hunters, the phenomena of ice melt which caused by global warming and leads the arctic deer unable to migrant. However, the argument fails to account for several other possible explanations for this apparent discrepancy.

First of all , the reliability of the reports is still doubtful. The author simply statements the reports from local hunters, yet it is still unclearly that how many hunters have taken part into this report. Besides, the authority of the report is not persuasive. Hunters may perhaps have rich experience in hunting arctic deer, but they do not have the professional research methods as the scientists.

Secondly, the arguer’s reasoning of linking the declining of arctic population with global warming trends which caused the ice melt because they happened at the same time seems . Nonetheless, there is no casual relationship between them that can provide the author’s assumption.The declining of arctic deer population may caused by the overhunted of the hunter, the increasing number of their predator, or maybe because of the extinction of the plants which are part of their food supply.

Finally, even the global warming accelerate the melting of ice, there is no evidence that can justify the facts arctic deer can not follow the age-old migration patterns across the frozen sea. The global warming is not strong enough to melt all the iceberg or glaciers at once, the coverage of ice would decrease but not disappear and still would be large enough for the arctic deer to go across. Besides ,there is not only one way for arctic deer to migrant from one place to another for hundreds of years, they may has have another option in such situation.

As it stands , the argument is not well reasoned the decrease of arctic deer populations. To make it logically acceptable(more persuasive), the arguer should provide more substantial facts to demonstrate that the connection between the ice melting and the declining of arctic deer’s population. What’s more, the arguer also need to show more survey about the decrease of the deer to solidify the argument .