从获取经验的性质来看，教学过程的重要特点是以学习（ ）为主。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30350' and id < 2452832 and id<>'2452832' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30350' and id > 2452832 and id<>'2452832' order by id asc limit 5