认识10以内的序数，是（ ）的数学教育内容。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31374' and id < 2516398 and id<>'2516398' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31374' and id > 2516398 and id<>'2516398' order by id asc limit 5