儿童只能用数手指的策略计算3+8的结果。该儿童的心智技能处于（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='23639' and id < 2056558 and id<>'2056558' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='23639' and id > 2056558 and id<>'2056558' order by id asc limit 5