长期口角糜烂，最可能缺乏的营养素是 ( )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28280' and id < 2315695 and id<>'2315695' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28280' and id > 2315695 and id<>'2315695' order by id asc limit 5