为提高课堂里群体的凝聚力，教师正确的做法有（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30659' and id < 2471432 and id<>'2471432' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30659' and id > 2471432 and id<>'2471432' order by id asc limit 5