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.（A）
(E) The rate of growth for low-paying service occupations will be greater than the overall rate of employment growth between 1982 and 1995.
请问为什么是A啊?谢谢!!!
这可以当成数学题来做，以前有人讨论过，你可以查以下相关链接。
题干说：低收入人数增加了最多，但在总的工作人群种比率并没有上升，而高收入人群的比率增加了。
这里运用到数学概念，当一个分额的基数很大的时候，增加的人数多并不代表在总人数的比率大。
举个例子。100个人，70个低收入，30个高收入。低收入增加30个，高手如增加20个，那么虽然低收入增加的人数比高收入的多，当所占比率下降了。
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