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我觉得主题句在文章最后: However, it is not at all clear why the costs of serving a highly loyal customer should in principle be different from those of serving any other type of repeat customer.
然后文章接着说:The key variables driving cost are size and type of order, special versus standard order, and so on, not high-loyalty versus divided-loyalty customers. As for price sensitivity, highly loyal customers may in fact come to expect a price discount as a reward for their loyalty.
这些都是对loyalty programs的质疑,所以选A。
欢迎指正。 |
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