相关BlackFriday的文学知识

问题详情：阅读短文，根据短文内容回答问题。BlackFriday   ThanksgivingisalwaysonaThursday.ThedayafterithasbeenknownasBlackFriday.Itisthestartoftheholidayshoppingseason,andithasbeenthebusiestshoppingdayof...