A father and his young daughter get on a bus and sit down. The conductor（售票员）comes to them for their money. The father says, "I want one ticket.”Then he gives the conductor some money. The conductor looks at the girl, then he asks, "How old are you?" The father starts to speak. But the conductor stops him, and the girl says, "I am six years old at home, and four years old in buses and trains. Father tells me that.’’ The father's face turns red. He has to take some money out of his bag and gives it to the conductor. The conductor gives him one and a half (半) tickets.

汉朝开国皇帝刘邦，出身平民，后参加农民起义军，力量不断壮大，最终登上王位，实现了“布衣到天子”的神话。与刘邦称帝相似的是（     ）

珠江三角洲地区成为我国经济发达地区的主要原因是（    ）