{"text_format":"3","workbook":"xlsx","n_sheets":1,"sheets":["Sheet1"],"read":"whole","date_system":"1900"}

{"sheet":"Sheet1","index":0,"n_rows":1,"n_cols":8,"rows_kept":1}
["序号","班级","姓名","学号","手机号码","演讲主题","演讲时间","指导教师"]