消化性溃疡最常见的并发症为()。 A.穿孔 B.出血 C.幽门梗阻 D.癌变 E.瘘 发布时间:2017-06-10 04:50 │ 来源:www.tikuol.com 题型:单项选择题 A1型题 问题: 消化性溃疡最常见的并发症为()。A.穿孔B.出血C.幽门梗阻D.癌变E.瘘管形成
题型:单项选择题 A1型题 The woman sitting next to me ________ very nervous, for she had never travelled by air.A.isB.has beenC.wasD.had been 查看答案