学习动机有高尚和低级之分，其划分标准是依据学习动机内容的（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30756' and id < 2476175 and id<>'2476175' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30756' and id > 2476175 and id<>'2476175' order by id asc limit 5