任务型阅读：Halloween is a strange holiday． It started several centuries ago in Europe． It began as “Hallow Evening” meaning “holy night”． At that time November 1st was called “All Saints’ Day” and people honoured all the saints who did not have their own special day． People believed that all the spirits of dead people were active on the night of October 31st. So people would play all sorts of tricks on each other．Black is one of the traditional Halloween colors, probably because Halloween festivals and traditions took place at night. Pumpkins are a symbol of Hall