斯金纳的程序学习包括（ ）等特征。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='23631' and id < 2055995 and id<>'2055995' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='23631' and id > 2055995 and id<>'2055995' order by id asc limit 5