第23题: [单项选择]患者女,65岁。乳腺癌根治术后3天,展起时突发左小腿疼痛,左足不能着地踏平,行走时疼痛加重。查体:左小腿肿胀,有深压痛,足背动脉搏动存在。对确诊最有意义的体征是() A. Homans试验阳性 B. Trendelenburg试验阳性 C. Perthes试验阴性 D. Pratt试验阴性 E. Buerger试验阳性 参考答案:A 答案解析:①患者有血栓形成的高危因素:癌症病人血液呈高凝状态、手术后卧床休息使血流缓慢;突发一侧下肢肿胀,足背动脉搏动存在,应考虑左下肢深静脉血栓形成。②为明确诊断,最有意义的体征是Ho-mans试验阳性,即将
第37题: [单项选择]How many animals can the man see A. He arrived here three hours ago. B. He’ s been here for an hour. C. He came here half an hour ago. 参考答案:B 答案解析:[听力原文] W: Excuse me, when did you arrive here, Mr. Wang M: I arrived here an hour ago.