下列选项中，不是面向对象主要特征的是( )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29839' and id < 2421719 and id<>'2421719' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29839' and id > 2421719 and id<>'2421719' order by id asc limit 5