教育活动内容的选择应体现（ ）原则。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27895' and id < 2291394 and id<>'2291394' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27895' and id > 2291394 and id<>'2291394' order by id asc limit 5