摘要：3．B 推理判断题.根据第三段中的“Because they could seen as being rude, said more than half of the respondents. Fifteen percent-..is useful for socializing.以及第四段中的 they couldn’t give up smoking because of -- 可推知人们难以拒绝敬烟是因为他们认为offering-and-accepting是一种社交方式.拒绝就意味着不礼貌.

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