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what is the most popular gift for mother's day? cards, flowers and food are the most popular mother's day gifts this year. eight out of 10 americans celebrate mother's day and spend nearly $100 on average.(national retail federation /anne r. carey and chad palmer, usa today) 词汇：celebrate v.庆祝, 祝贺, 表扬, 赞美, 举行on average平均起来retail n.零售adj.零售的v.零售, 转述adv.以零售方式federation n.同盟, 联邦, 联合, 联盟 | 
