最近发展区是指儿童已经达到的发展水平和可能达到的发展水平之间的距离。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31603' and id < 2530760 and id<>'2530760' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31603' and id > 2530760 and id<>'2530760' order by id asc limit 5