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gre写作主要考察考生的逻辑思维组织能力，要求考生根据具体的题目要求，理解、分析、评价论证的能力，我们又如何分析gre写作中的论点清晰的表达自己的逻辑评价和思维能力呢? 让步式攻击：首先，攻击原文第一个错误，例如是调查类错误，攻击其调查过程、调查数据是否具有代表性等等。然后，在攻击第二个错误时，假定上面的调查即便是在没有错误的情况下进行的，也不能导出作者原文的第二个论断，言外之意就是何况这个调查还是有错误的。最后，在攻击第三个错误时，假定第二个问题也是成立的，也无法导出第三个论断。这样一种让步式的体系，到最后就彻底驳斥了原文的整个逻辑体系，让原文的逻辑无法成立，题目最后的结论自然就成为了空中楼阁。 下面我们拿Argument38题来做一个讲解。 Argument 38 The following memo appeared in the newsletter of the West Meria Public Health Council。 An innovative treatment has come to our attention that promises to significantly reduce absenteeism in our schools and workplaces. A study reports that in nearby East Meria, where fish consumption is very high, people visit the doctor only once or twice per year for the treatment of colds. Clearly, eating a substantial amount of fish can prevent colds. Since colds are the reason most frequently given for absences from school and work, we recommend the daily use of Ichthaid, a nutritional supplement derived from fish oil, as a good way to prevent colds and lower absenteeism。 | 
