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题库 / OG2016-CR-67
Coffee shop owner: A large number of customers will pay at least the fair market value for a cup of coffee, even if there is no formal charge. Some will pay more than this out of appreciation of the trust that is placed in them. And our total number of customers is likely to increase. We could therefore improve our net cash flow by implementing an honor system in which customers pay what they wish for coffee by depositing money in a can.
Manager: We're likely to lose money on this plan. Many customers would cheat the system, paying a very small sum or nothing at all.
Which of the following, if true, would best support the owner's plan, in light of the manager's concern?
The new system, if implemented, would increase the number of customers.
By roasting its own coffee, the shop has managed to reduce the difficulties (and cost) of maintaining an inventory of freshly roasted coffee.
Many customers stay in the cafe for long stretches of time.
The shop makes a substantial profit from pastries and other food bought by the coffee drinkers.
No other coffee shop in the area has such a system.
情景：大多数顾客会付给一杯咖啡一个公平的价格，有些可能还会付的更多。因此，为了增加现金流，我们开发一套诚信系统吧，让顾客自己支付咖啡钱。经理对此有反驳：很多顾客可能根本就不会给钱。
推理：显然地，本题中的咖啡店主做出了一个方案推理，经理指出了该方案的一个可行性问题。题目让我们反驳经理的说法。
选题方式：略
选项分析：
A选项：新的系统将会增加客户的数量。如果所有客户都不给钱，那么该系统就算增加了客户数量也不会增加收入。
B选项：通过烘焙自己的咖啡，商店可以减少贮藏咖啡的难度和成本。本选项和“诚信系统”没有关系。
C选项：很多顾客会在咖啡店里停留很久。本选项和“诚信系统”没有关系。
D选项：Correct. 咖啡店的很大一部分利润来自于糕点和其它食物。如果本选项成立，则就算顾客都不给咖啡付钱，咖啡店也可能会赚取利润。
E选项：没有其它的咖啡店拥有这样一个系统。无论其它咖啡店有没有，我们还是无法确定这个系统是否能带来利润。
方案推理，感觉答案只能用排除法来做。
搞个信用机制，owner觉得能挣钱，manager觉得会亏钱。
A 顾客量会增加。这是没有根据的预测，不能起到加强或者削弱的作用。
B 没说要自己烘焙咖啡。
C 呆的时间长不一定能挣钱，跟信用机制也没关系。
E 其他咖啡店不搞这一套，也不能说明这家店搞这一套能不能赚钱。
D 咖啡店靠卖其他吃的挣很多钱，说明咖啡店的利润主要来自卖吃的东西，而不是来自咖啡。有可能搞了信用机制，因为咖啡可以不付钱，会有更多的人来店里，并且这些人，也很有可能会买其他吃的，所以客流量增加了，其他食物的销量也增加了，能比以前更赚钱。
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