Is one allowed to offer gratuities to the guides?
可导游费吗?
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To examine the relationship between gratuities and opinion, researchers asked 20 art experts and 20 non-experts to view a series of paintings. But first, subjects were shown the logo of a fictitious company that would be giving them $300 for participating.
为检验" 小恩小惠" 与舆论之间的联系,研究人员邀请20位艺术家和20位非专家观看一系列的绘画作品。但是,在观看之前研究人员向他们展示了一个虚拟公司的logo,并给他们300美金作为参与费。