问题：
[单选题]患者，男,25岁，节律性间断上腹隐痛3年，加重2天，10小时前开始黑便3次，量约1000g左右，P 120 次/分,Hb90g/L，首选下列哪种治疗
A、大量输液
B、输右旋糖酐
C、外科手术
D、急诊内镜止血
E、输血、补液
参考答案：
E
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