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。
Secondly, the recommendation depends on the assumption that the cost of electricity is the
same for all three groups. However, it is possible that people who use both fans and air
conditioners incur the lowest total electric costs among the three groups simply because these
people pay the least per unit of electricity. The fact that Claria is geographically diverse lends
support to this notion; people who use both fans and air conditioners are likely to live in the
same climatic region, and people in the same region are more likely to be subject to the same
electricity usage rates.
Thirdly, the argument provides insufficient information about the study on which it relies. If the
results were based on only one warm season then the argument would be less persuasive
than if the results were based on more than one warm season; in other words, the larger the
statistical sample the more reliable the results.
In condusion, the recommendation for using both cooling methods is dubious at best. To
bolster it, the argument's proponent must show that climatic conditions are similar in all regions.
The proponent must also show that rates charged for electricity are similar in all regions.
Finally, in order to better evaluate the extent to which the cited study supports the
recommendation we would need more statistical information about the study's time span.
Argument 48
As people grow older, an enzyme known as PEP increasingly breaks down the neuropeptide
chemicals involved in learning and memory. But now, researchers have found compounds that
prevent PEP from breaking neuropeptides apart. In tests, these compounds almost completely
restored lost memory in rats. The use of these compounds should be extended to students
who have poor memory and difficulty in concentrating-and therefore serious problems in
school performance. Science finally has a solution for problems neither parents nor teachers
could solve.
This argument concludes that certain compounds should be administered to students with
poor memory and concentration to improve their performance in school. The argument cites
an experiment involving rats in which the same compounds prevented the enzyme PEP from
breaking down chemicals involved in learning and memory. The argument suffers from several
flaws, which render it unconvincing.
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