“一问三不知''出自《左传》，说的是哪“三不知"？ < ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30138' and id < 2438396 and id<>'2438396' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30138' and id > 2438396 and id<>'2438396' order by id asc limit 5