通过不断强化逐渐趋近目标的反应，来形成某种较复杂的行为称为（

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32293' and id < 2569642 and id<>'2569642' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32293' and id > 2569642 and id<>'2569642' order by id asc limit 5