上消化道出血可单纯表现为呕血或黑便，也可两者兼有，这取决于

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28712' and id < 2341915 and id<>'2341915' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28712' and id > 2341915 and id<>'2341915' order by id asc limit 5