6. 圣诞节一定要寄卡片吗?
Christmas cards are usually exchanged during the weeks preceding
Christmas Day on December 25 by many people (including non-Christians)in Western society and in Asia. The traditional greeting reads "wishingyou a Merry Christmas and a Happy New Year", much like the firstcommercial Christmas card, produced by Sir Henry Cole in London 1843.
没有规定吧,但在圣诞节互寄卡片的确是这个节日的传统,西方社会和亚洲都是。历史上的第一张商业圣诞卡片起源于1843年的伦敦。(为保护环境还是建议大家寄电子卡片哟!)