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。
Thirdly, the speaker assumes that the bones of fish that archeologists have found discarded
on the island were discarded by humans, and not by some other large mammal. However, the
speaker provides no evidence to substantiate this assumption. Given other possible
explanations for these discarded fish bones, this evidence in itself lends little credible support
to the speaker's theory about the extinction of large species of mammals.
In conclusion, the argument is unconvincing as it stands. To strengthen it, the speaker must
rule out the possibility that humans exported the bones of these other species. To better
evaluate the argument, we would need more information about the diet of humans and of the
now-extinct mammals during that time period; particularly, we would need to know whether
those other mammals also fed on the fish whose discarded bones have been found on the
islands.
Argument 88
The following appeared in a newspaper feature story.
"At the small, nonprofit hospital in the town of Saluda, the average length of a patient's stay is
237
two days; at the large, for-profit hospital in the nearby city of Megaville, the average patient
stay is six days. Also, the cure rate among patients in the Saluda hospital is about twice that of
the Megaville hospital. The Saluda hospital has more employees per patient than the hospital
in Megaville, and there are few complaints about service at the local hospital. Such data
indicate that treatment in smaller, nonprofit hospitals is more economical and of better quality
than treatment in larger, for-profit hospitals."
This newspaper story concludes that the small, nonprofit hospital in Saluda provides more
efficient, better-quality care than the for-profit hospital in Megaville. To justify this conclusion
the author cites the following comparisons between the Saluda hospital and the Megaville
hospital: At the Saluda hospital the average length of a patient's stay is shorter, the cure rate
and employee-patient ratio are both higher, and the number of complaints from patients is
lower. However, careful consideration of these facts reveals that they fail to justify the author's
conclusion.
In the first place, the author unfairly assumes that a shorter hospital stay indicates a quicker
recovery and therefore better care. It is equally possible that the Saluda hospital simply cannot
afford to keep patients as long as it should to ensure proper care and recovery. Perhaps the
hospital sends patients home prematurely for the purpose of freeing up beds for other patients.
Since the author has failed to rule out other possible explanations for this shorter average stay,
I remain unconvinced based on this evidence that the Saluda hospital provides better care
than Megaville's hospital.
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