儿童在非正规性科学活动中最主要的学习形式是（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='27839' and id < 2287702 and id<>'2287702' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27839' and id > 2287702 and id<>'2287702' order by id asc limit 5