题目

阅读理解Christmas TraditionsSinceabout 400 AD, Christmas day has been celebrated on 25th December. This date wasthe old mid-winter festival in pre-Christian times, around the time of thelongest night and the shortest day. Christmas in the 21st century has manytraditions.Shopscan make about 60 per cent of their year's income in the three months beforeChristmas. So most shops get ready for it in October. The shopping centres arebeautifully decorated and stay open late at night. The first time this happenedwas in 1867 when Macys', a famous shop in New York, stayed open until midnighton Christ若则m＋n=______________．