保持在一分钟以内的记忆是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30471' and id < 2461601 and id<>'2461601' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30471' and id > 2461601 and id<>'2461601' order by id asc limit 5