位于口底的中线部，连接口底与舌腹的黏膜皱襞的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30043' and id < 2433756 and id<>'2433756' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30043' and id > 2433756 and id<>'2433756' order by id asc limit 5