A. The Americans won most of the events. B. President Roosevelt decided to hold the Games in Chicago. C. St. Louis provided expense for every athlete. D. The Louisiana Purchase Exposition was an economic summit. 参考答案:A 答案解析:[解析] 推理题。文章第一段only 687 athletes(525 were from the United States)from 13 nations attended.“只有来自13个国家的