演示文稿中的每一张演示的单页称为（53),它是演示文稿的核心。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29741' and id < 2415496 and id<>'2415496' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29741' and id > 2415496 and id<>'2415496' order by id asc limit 5