课堂管理在课堂教学中具有不可替代性，下列不属于课堂管理功能的是（

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30658' and id < 2471424 and id<>'2471424' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30658' and id > 2471424 and id<>'2471424' order by id asc limit 5