{"text_format":"3","workbook":"xls","n_sheets":3,"sheets":["Sheet1","Sheet2","Sheet3"],"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"Sheet1","index":0,"n_rows":1,"n_cols":10,"rows_kept":1,"flags":["formulas_cached_only"]}
["序号","EI检索号（accession number）","题目","第一作者","第一作者单位","期刊","文献类型(期刊/会议)","年（卷），期，页码","问题描述","备注"]

{"sheet":"Sheet2","index":1,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}

{"sheet":"Sheet3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}