考査维生素C丸鉴别反应的专属性，应呈 负反应的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29784' and id < 2418379 and id<>'2418379' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29784' and id > 2418379 and id<>'2418379' order by id asc limit 5