ac 1. Heading杨题法 Five headings are used in this passage to put the whole text into five distinct parts, with each heading serving as a separate topic. And these headings are derived from the title of the text: five Famous Symbols ofamerican Culture. This device is helpful in making the text-structure clear For details 时间Five headings are used in this passage to put the whole text into five distinct parts, with each heading serving as a separate topic. And these headings are derived from the title of the text: Five Famous Symbols of American Culture. This device is helpful in making the text-structure clear. 1. Heading (标题法) For details 标题法 Back 时间法