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问题:

How are “incentive cards” used?

答案:

答: They are used to buy things with "loyalty points" people haven’t earned yet, but which then have to be repaid with increased customer loyalty. 分析:根据"incentive cards"可定位至第三段倒数第三句,该句之后对"incentive cards"的其中一种进行了介绍,指出“You can use it to buy things with ‘loyalty points’ you haven’t earned yet, but which then have to be repaid with increased customer loyalty”。