记忆过程包括以下哪几个基本环节？（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31572' and id < 2529136 and id<>'2529136' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31572' and id > 2529136 and id<>'2529136' order by id asc limit 5