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(A)It is no secret that getting something free feels very good.
(B)The funny thing is that we often feel virtuous while we are doing so.
(C)That is, using a credit card makes us feel like we are using an easy way to pay cash.
(D)For example, a credit card may appear to be a better deal because it charges no annual fees.
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統計: A(5), B(15), C(15), D(37), E(0) #1192134
統計: A(5), B(15), C(15), D(37), E(0) #1192134