下列不属于课堂管理的功能的是 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26164' and id < 2192597 and id<>'2192597' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26164' and id > 2192597 and id<>'2192597' order by id asc limit 5