桑代克的尝试一错误理论是通过以下哪一经典实验得出的？（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32265' and id < 2568690 and id<>'2568690' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32265' and id > 2568690 and id<>'2568690' order by id asc limit 5