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。
"Our poorest-selling magazine issues over the past three years were those that featured
international news stories on their front covers. Over the same period, competing
news-magazines have significantly decreased the number of cover stories that they devote to
international news. Moreover, the cost of maintaining our foreign bureaus to report on
international news is increasing. Therefore, we should decrease our emphasis on international
news and refrain from displaying such stories on our magazine covers."
In this memo the publisher of the magazine Ne~vsbeat claims that to maximize sales the
magazine should decrease its emphasis on international news and refrain from displaying
such stories on its covers. To support this condusion the publisher points out that the
magazine's poorest-seUing issues during the last three years have been those with cover
stories about international events, and that during this same period the number of international
cover stories appearing in other news magazines has decreased. On several grounds, this
evidence lends little credible support for the memo's conclusion.
First of ail, the fact that the magazine's poorest-selling issues were the ones with
international cover stories might be explained by a variety of factors. Perhaps international
events themselves were not as interesting during those periods. If so, it might be a mistake to
refrain from emphasizing international events when those events are interesting enough to
stimulate sales. Or perhaps the news magazine business is seasonal, or cyclical, and those
particular issues would have sold more poorly regardless of the cover story. In short, without
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ruling out other possible explanations for the relatively poor sales of those particular issues the
publisher cannot justifiably condude that international cover stories were the cause of the
relatively poor sales.
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