一个富人和他的儿子都喜欢收集珍贵的名画。从毕加索到拉斐尔,他们的收藏无所不有。他们经常坐在一起欣赏这些巨作。越战爆发的时候,儿子应征入伍。他表现非常勇敢,但在拯救战友时牺牲了生命。当父亲收到通知,他为失去惟一的儿子而感到极度的悲痛。大约一个月后,圣诞前夕,他听到有人叩门。一 A rich man and his son like to collect precious paintings. From Picasso to Raphael, their collection is nothing. They often sit together to admire these masterpieces. When the Vietnam War broke out, his son was drafted into the army. He was very brave, but he sacrificed his life while saving his comrades. When the father received the notice, he felt extremely grief for losing his only son. About a month later, on Christmas Eve, he heard someone knock on the door. one