文章向读者介绍了埃德蒙顿民间音乐节。
31. B 细节理解题。从第一段the Edmonton Folk Music Festival has been commemorating(纪念)the true feeling of what folk music is all about …可知答案。
32. A 推理判断题。B项文中未提及；根据第三段中的There are free water stations throughout the venue(举办地)…可排除C项；根据第三段中的…that is returned when the plate is brought back可排除D项。根据第二段This year will be the sixth year when volunteer Riedel will be offering up her time to the festival.可知答案。
