学习效率和动机水平之间存在（ )。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30604' and id < 2469259 and id<>'2469259' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30604' and id > 2469259 and id<>'2469259' order by id asc limit 5