※ 引述《si4410dy (si4410dy)》之铭言：
: 17. (26864-!-item-!-188;#058&003368)
: At present the Hollywood Restaurant has only standard-height tables.
: However, many customers come to watch the celebrities who frequent the
: Hollywood, and they would prefer tall tables with stools because such seating
: would afford a better view of the celebrities. Moreover, diners seated on
: stools typically do not stay as long as diners seated at standard-height
: tables. Therefore, if the Hollywood replaced some of its seating with high
: tables and stools, its profits would increase.
^^^^^^^
: The argument is vulnerable to criticism on the grounds that it gives reason
: to believe that it is likely that
: (A) some celebrities come to the Hollywood to be seen, and so might choose to
: sit at the tall tables if they were available
: (B) the price of meals ordered by celebrities dining at the Hollywood
: compensates for the longer time, if any, they spend lingering over their meals
: (C) a customer of the Hollywood who would choose to sit at a tall table would
: be an exception to the generalization about lingering
: (D) a restaurant's customers who spend less time at their meals typically
: order less expensive meals than those who remain at their meals longer
^^^^^^^^^^^^^^
: (E) with enough tall tables to accommodate all the Hollywood's customers
: interested in such seating, there would be no view except of other tall tabl
: OA:C
: 想请问这题的D选项
: 花较少时间吃饭通常点的较便宜，反之亦然
: 为何不能这样解:
: 部分换成高脚桌椅的点的变成较便宜所以profit不会increase
便宜指的是价格高低 profit指的是中间的利润
这之间没有直接的关联，因为缺乏“成本”这个因素
单位利润＝单位价格-单位成本
所以便宜的餐点搞不好成本很低很低，profit反而高
比较贵的餐点搞不好成本非常高，反而赚不到多少钱
这也是自修影片中有讲到的“动态平衡”概念（10'25"开始）
http://youtu.be/R3zI42gZdSQ?t=10m25s
Dustin