GMAT逻辑疑难杂症之一：复合混合型结构

例题：

In the past, teachers, bank tellers, and secretaries were predominantly men; these occupations slipped in pay and status when they became largely occupied by women. Therefore, if women become the majority In currently male-dominated professions like accounting, law, and medicine, the income and prestige of these professions will also drop.

Which of the following, if true, would most likely be part of the evidence used to refute the conclusion above?

A. Accountants, lawyers, and physicians attained their current relatively high levels of Income and prestige at about the same time that the pay and status of teachers, bank tellers, and secretaries slipped.

B. When large numbers of men join a female-dominated occupation, such as airline flight attendant, the status and pay of the occupation tend not to change.

C. The demand for teachers and secretaries has increased significantly in recent years, while the demand for bank tellers has remained relatively stable.

D. If present trends in the awarding of law degrees to women continue, it will be at least two decades before the majority of lawyers are women.

E. The pay and status of female accountants, lawyers, and physicians today are governed by significantly different economic and sociological forces than were the pay and status of female teachers, bank tellers, and secretaries in the past.

例题：

To reduce waste of raw materials, the government of Sperland is considering requiring household appliances to be broken down for salvage when discarded. To cover the cost of salvage, the government is planning to charge a fee, which would be imposed when the appliance is first sold. Imposing the fee at the time of salvage would reduce waste more effectively, however, because consumers tend to keep old appliances longer if they are faced with a fee for discarding them.

Which of the following, if true, most seriously weakens the argument?

(A) Increasing the cost of disposing of an appliance properly increases the incentive to dispose of it improperly.
(B) The fee provides manufacturers with no incentive to produce appliances that are more durable.
(C) For people who have bought new appliances recently, the salvage fee would not need to be paid for a number of years.
(D) People who sell their used, working appliances to others would not need to pay the salvage fee.
(E) Many nonfunctioning appliances that are currently discarded could be repaired at relatively little expense.

小结：

因为国内师生共同努力的结果，再加上国内针对每门考试的应试水平，使得我们对于每一门考试包括GMAT考试的应试水平达到了一定的高度。GMAC也意识到了这种情况，一方面制定相应的措施管制鸡精等内容，暗着也在题目的考法和难度上不断地加码。

大家要记住一点的是，尽管随着时间GMAT题目的难度系数相对过去的题目有所增加，正如对解决上述题目所需要的知识和解题思路一样，不管官方再怎么加码，也不会超出该考试每个部分考察的核心内容和能力的范畴。

所以应对变化最好的方法踏踏实实把该学的内容学会了，该练的练到了，该提高的能力提高了，才能做到以不变应万变，出分就是水到渠成的事情。