我的解题思路：
A 无关
B 相关，而且各个元素都有
C 无关
D 应该是weaken
E 相关，但是缺少tips 元素
所以我蒙对了答案b，请问nn其中的道理。
Studies in restaurants show that the tips left by customers who pay their bill in cash tend to be larger when the bill is presennnted on a tray that bears a credit-card logo. Consumer psychologists hypothesize that simply seeing a credit-card log makes many credit-card holders willing to spend more because it reminds them that their spending power exceeds the cash they have immediately available.
which of the following, if true, most strongly supports the psychologist's interpretation of the studies?
A. The effect noted in the studies is not limited to patrons who have credit cards
B. Patrons who are under financial pressure from their credit-card obligations tend to tip less when presented with a restaurant bill on a tray with credit-card logoo than when the tray has no logo.
C. In virtually all of the cases in the studies, the patrons who paid bills in cash did not possess credit cards
D. In general, restaurant patrons who pay their bills in cahs leave larger tips than do those who pay by credit card.
E. The percentage of restaurant bils paid with given brand of credit card increases when that credit cards's logo is displayed on the tray with which the bill is prepared.
道理很复杂的，我搞了半天才懂，
就是在B E里犹豫， E里的对象，仔细看跟文章是无关的。。
台灣補習班給的答案是B
要是我欠CitiBank錢
我看到Citi的logo自然心情不好
也會影響到我給tips的amount...
個人淺見
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