儿童出现眼睛干涩、夜盲症，可 能主要缺乏 ( )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26613' and id < 2216596 and id<>'2216596' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26613' and id > 2216596 and id<>'2216596' order by id asc limit 5