难易程度：★★★★

题目题材：生命科学

gre argument72 题目：

In measuring electrical activity in different parts of the brain, researchers found that people who describe themselves as generally happy(1) have more activity in the left prefrontal lobe of their brains than do other people(2). Therefore, a medication for stimulating(3) the left prefrontal lobe of the brain(5) would be an effective treatment for clinical depression(4).

提纲：

(1)People may have misunderstanding about their level of happiness.

(2)The author falsely assumes that it is the activity in the left prefrontal lobe of brains that resulted in the happiness of those people.

(3)There may be some differences between external stimulating and natural activity of brains.

(4)We are not informed about the accurate definition, actual cause and detailed symptoms of clinical depression, thus the evidence cited by the author may have nothing to do with the conclusion.

(5)The author fails to consider the negative effect of the proposed therapy.

注：题目中括号里的数字表明这句话体现的是提纲中第几号缺陷。

无论是gre issue还是gre argument，考生都应该养成写提纲的习惯。这种提纲式的gre写作练习可以帮助考生锻炼写作的逻辑性，而gre写作高分最重要的得分依据就是作文的逻辑性要强。