GMAT逻辑缺陷题难在表达抽象。在看选项之前，要先对原文的推理结构有一个大致概念。然后分别检查每个选项是否符合此概念。检查的唯一方法是到原文中找相应内容。如果原文中找不到相对应之处，则排除。做到Method and Flaw 题目是高分的表现。
把所有做过的Method and Flaw题目挑出来，仔细读选项是如何用抽象的语言描述的，熟悉英文的抽象表达。
Debater: The average amount of overtime per month worked by an employee in the manufacturing division of the Haglut Corporation is 14 hours. Most employees of the Haglut Corporation work in the manufacturing division. Furthermore, the average amount of overtime per month worked by any employee in the company generally does not fluctuate much from month to month. Therefore, each month, most employees of the Haglut Corporation almost certainly work at least some overtime.
The debater’s argument is most vulnerable to criticism on which of these grounds?
(A) It takes for granted that the manufacturing division is a typical division of the corporation with regard to the average amount of overtime its employees work each month.
(B) It takes for granted that if a certain average amount of overtime is worked each month by each employee of the Haglut Corporation, then approximately the same amount of overtime must be worked each month by each employee of the manufacturing division.
(C) It confuses a claim from which the argument’s conclusion about the Haglut Corporation would necessarily follow with a claim that would follow from the argument’s conclusion only with a high degree of probability.
(D) It overlooks the possibility that even if, on average, a certain amount of overtime is worked by the members of some group, many members of that group may work no overtime at all.
(E) It overlooks the possibility that even if most employees of the corporation work some overtime each month, any one corporate employee may, in some months, work no overtime.
A、题干并没有说“the manufacturing division is a typical division of the corporation with regard to the average amount of overtime”。
B、题干并没有说“the manufacturing division is a typical division of the corporation with regard to the average amount of overtime”。