第7题: [单项选择]患者,男性,50岁,既往乙型肝炎病史二十余年,今晨突然发生呕血,色鲜红,量约1500ml,急至医院就诊,查体:BP80/50mmHg,P106次/分,面色苍白,四肢末梢凉,脾于肋缘下5.Ocm触及,移动浊音(+),腹壁可见静脉曲张,至医院后患者又呕血一次,量约300ml。患者出血原因最可能是() A. 食管胃底静脉曲张破裂 B. 脾功能亢进 C. 脾破裂 D. 胃溃疡出血 E. 肝内胆道出血 参考答案:A
第10题: [单项选择]Flu shots are given every fall as a precaution against an epidemic the following winter. A. required treatment B. free service C. preventive measures D. new therapy 参考答案:C 答案解析:画线词precaution:预防措施。其含义等于选项C.preventive measures(预防性措施)。辨义:A.required treatment所要求的治疗;B.free service免