- 問題詳情:Everybodyhatesit,buteverybodydoesit.Arecentreportsaidthat40%ofAmericanshatetipping.Butwhydotipsexist? Thecommonopinioninthepastwasthattipsbothrewardedtheeffortsofgoodserviceandreduceduncomfortablefeelingsofinequality.Itisbelievedthatthebetter...
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