题型:选择题 . There were no tickets _____ for Friday's performance.A.preferableB.possibleC.considerableD.available 查看答案
题型:单项选择题 男性,30岁,上腹疼痛伴返酸三年,昨日始呕血,黑便总量约400 ml,可能性最大的出血的原因是:()A.食管胃底静脉曲张破裂出血B.胃十二指肠溃疡出血C.胆道出血D.胃癌出血 查看答案