Despite their abundant first-hand contact with and knowledge of nature, early humans had little explanatory knowledge; they could give no naturalistic explanation if floods or droughts came or if the hunting or fishing was poor. Not knowing how to cope with nature by naturalistic means, they had to resort to the supernatural. They turned to magic and spent much time in efforts to persuade or fool nature into yielding a GREater abundance. By making each useful animal or plant the totem of a particular group, and by using images, symbols, and imitative dances, primitive people believed that the animal or food could be encouraged to flourish and multiply. As long as the rules of the totems were strictily observed, the reproducation of the group and of its food supply could be assured.
GRE词汇：abundant explanatory drought resort supernatural yield totem symbol imitative primitive flourish multiply reproducation assure
非GRE词汇的生难词：无
可能影响整体阅读理解的非GRE词汇：无
实验结果：GRE词汇比例10.6%
4、社会学术类 Economics
First, imagine a world before the angel in which all resources can work together, a world with a single language and a single currency - say, one consisting of red banknotes. This world’s economy would be one big baby-sitting co-op; therefore, expanding the quantity fo money could boost output up to a point, but beyond that point such expansion would be counterproductive and would usually be dissipated in inflation. (True, the actual world economy is unthinkably immense - gross world product is probably about $25 trillion. The U.S. economy, with its $7 trillion GDP, is unthinkably immense even by itself - yet it can usefully be thought of as a baby -sitting co-op. It is hard to see that going up a notch in scale would make a qualitative difference.)
GRE词汇：boost counterproductive dissipate inflation immense gross notch scale qualitative
非GRE词汇的生难词：banknotes 钞票，baby-sit 照顾婴儿，co-op [俚] 消费合作社，trillion 万亿
可能影响整体阅读理解的非GRE词汇：banknotes，baby-sit，trillion
实验结果：GRE词汇比例6.9%
5、社会学术类 The Politics of Global Governance
Clearly, the fluidity of the balance of power ensures that the fortunes of specific IGOs or other international institutions rise and fall in tune with the ephemeral interests of the powers of the time (Garr, 1964; Gilpin, 1981; Grieco, 1990). Neither realist nor neorealist theory allows much room for predictions about the rise or fall of specific coalitions of GREat military powers. While realists explain the demise of the League of Nations in terms of its failure to reflect the balance of power, it’s hard to predict exactly when the League would cease to function from their analyses. Waltz (1979, p. 124), for example, does not indicate when military coalitions will change in relationship to changes in the distribution of power, other than to assert that such changes will occur periodically.
GRE词汇：fluidity fortune specific tune ephemeral prediction coalition military demise analyse indicate distribution assert
非GRE词汇的生难词：neorealist [哲] 新实在论者; [文艺] 新现实主义者
可能影响整体阅读理解的非GRE词汇：无
实验结果：GRE词汇比例9.9%
五、实验结论
GRE词汇在五种实验材料中均有出现。且比例均在5%以上（三种材料接近10%或超出10%。另两种在7%左右）。更关键的是。这些GRE词汇直接影响到整体阅读理解。而其他非GRE词汇的生难词对理解影响相对小的多。
由此可见。GRE词汇不仅仅在GRE考试中可以得到运用。更能在今后阅读英文文学或学术类书籍时发挥重要的作用。希望大家能通过这个简陋的实验来正视词汇在终身学习中的重要性。“中学为体，西学为用”。在今后的学习生活中。这些词汇必然会一次次复现。我在阅读全球通史时。就深深感受到了准备过GRE考试的“舒畅”。阅读密密麻麻的英文。完全不受阻碍。成就感不言而喻。
