大便质黑如柏油，或便血紫黑，此出血多见于

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29222' and id < 2378222 and id<>'2378222' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29222' and id > 2378222 and id<>'2378222' order by id asc limit 5