关于放射性活度衰减规律，下列哪种说法正确？（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30406' and id < 2458159 and id<>'2458159' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30406' and id > 2458159 and id<>'2458159' order by id asc limit 5