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pollyji · 发表于 2014-9-24 06:26:04

19. Recent estimates predict that between 1982 and 1995 the greatest increase in the number of people employed will be in the category of low-paying service occupations. This category, however, will not increase its share of total employment, whereas the category of high-paying service occupations will increase its share.
If the estimates above are accurate, which of the following conclusions can be drawn?
(A) In 1982 more people were working in low-paying service occupations than were working in high-paying service occupations.
(B) In 1995 more people will be working in high-paying service occupations than will be working in low-paying service occupations.
(C) Nonservice occupations will account for the same share of total employment in 1995 as in 1982.
(D) Many of the people who were working in low-paying service occupations in 1982 will be working in high-paying service occupations by 1995.
(E) The rate of growth for low-paying service occupations will be greater than the overall rate of employment growth between 1982 and 1995.

The correct answer is A but I do not understand it. Anyone can help me out? Thanks!!!!!!

lainemai · 发表于 2014-9-26 15:08:57

这是一个MUST BE TRUE QUESTION,即假定题干是正确的，从题干推出下面的问题，题干是一个fact set,并没有premise和conclusion.题干讲的是一个最近的预测说在1982年到1995年间激增的就业人数都是在low paying service这一类的行业，但是这一类行业将不会扩大总的就业份额，与此相反，high paying这一类将会扩大就业份额。那么问以下哪一项符合上述事实，先说几个错误选项，B：1995年在high paying 的岗位上工作的人将会比在low paying上的多，题干只是说了low paying 和high paying的就业份额的情况，并不能确定就业份额扩大人数就一定是多的，有可能就业的人群都是只适合在low paying的岗位上工作的。
C：讲到nonservice,是新引入的一个概念，在must be true 这类问题里可直接排除，因为题干并没有讲到。
D：题干也没有说1982年大部分在low paying工作的人在1995年会转移到high paying的领域，也没有办法推出
E：讲到增速，文中也没有提到增速的问题，属于exaggerated answer无法推出，排除。
再说正确选项A：看最后一句，说low paying将不会增加其就业份额，但是high pay会作出增加就业份额，为什么会？原因肯定是因为high pay领域的就业人数比low pay的少，加之1982~1995年预测大部分增长的就业人数在low pay领域，所以high pay才回增加就业份额。

其实个人感觉这道题跟真题比起来不太严谨咯。因为must be true question一般正确答案就两种：1.PARAPHRASED ANSWERS 2. Answers that are the sum of two or more stimulus statements.

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