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标题: 求详细的推理过程呀,谢啦 [打印本页]

作者: xiaoyu612    时间: 2012-3-8 13:01
标题: 求详细的推理过程呀,谢啦
Q15:

Lightbox, Inc., owns almost all of themovie theaters in Washington County and has announcedplans to double the number of movie screens it has in the county within fiveyears.  Yet attendance at Lightbox’stheaters is only just large enough for profitability now and the county’spopulation is not expected to increase over the next ten years.  Clearly, therefore, if there is indeed noincrease in population, Lightbox’s new screens are unlikely to proveprofitable.


Which of the following, if true about Washington County, most seriously weakens theargument?


求详细的推理过程呀,谢啦

作者: 子弹青春    时间: 2012-3-8 15:37
In the argument:
attendance is large enough now+population is not expected to increase(----->the over all attendance will not increase while the screens will be doubled)----->no more profits will be produced.

The assumption needed in the inference above is that the attendance per person will no change in the future.
In another words, the concept of attendance per person is unreasonably replaced by the concept of population in the argument above.

So A is right.




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