下列选项中，哪些是常用的记忆术？（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32284' and id < 2569491 and id<>'2569491' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32284' and id > 2569491 and id<>'2569491' order by id asc limit 5