皮亚杰认为前运算阶段对应的年龄是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28331' and id < 2318577 and id<>'2318577' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28331' and id > 2318577 and id<>'2318577' order by id asc limit 5