第10题: [单项选择]Why did Laura and Laurence start a farm A. They knew organic produce was in demand. B. They wanted to grow their own food. C. They had been trained in organic farming. D. They had moved together to the country. 参考答案:B 答案解析:从文章第二段第三句“The land here had never been intensively farmed,it was all permanent pasture,and in the ea
第12题: [单项选择]主动脉瓣下隔膜性狭窄描述错误的是 A. 主动脉瓣下出现环形或半环形隔膜 B. 左心室进入主动脉的血流受阻 C. 左室流出道血流速度增高 D. 主动脉血流速度增高 E. 左心室壁增厚不明显 参考答案:E 答案解析:孤立性主动脉瓣下狭窄是先天性左室流出道梗阻中较常见的原因,可分为隔膜型与隧道型(纤维肌型)。主动脉瓣下隔膜及环形肌肥厚、左室壁肥厚可显示。
第27题: [单项选择]男性,61岁,活动后心悸、气促5年,加重伴双下肢水肿3个月。查体:血压140/90mmHg,双肺底少许湿性啰音。心界扩大,心率130次/分,心律绝对不齐,心音强弱不等,可闻及舒张期奔马律。心尖区可闻及2/6级收缩期柔和吹风样杂音。肝肋下3cm,脾未触及,双下肢中度水肿。最可能的诊断是() A. 高血压性心脏病 B. 风湿性心脏病,二尖瓣关闭不全 C. 冠心病 D. 扩张型心肌病 E. 退行性心脏瓣膜病 参考答案:D