“最近发展区”的提出者是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30874' and id < 2485247 and id<>'2485247' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30874' and id > 2485247 and id<>'2485247' order by id asc limit 5