第4题: [单项选择]患者,男性,72岁,有慢性支气管炎、阻塞性肺气肿病史20年。胸闷、气短加重1周,血气检查:pH 7.29, PaCO2
78mmHg,PaO2 58mmHg, HCO2 32mmol/L,BE
5mmol/L。据此结果该患者酸碱失衡的类型最可能是 A. 失代偿性呼吸性碱中毒 B. 代谢性酸中毒 C. 失代偿性呼吸性酸中毒 D. 代偿性呼吸性酸中毒 E. 代偿性呼吸性碱中毒 参考答案:C
参考答案:We tend to think of evolution as something that happens to other species,but it is happening to humans,too.
第16题: [单项选择]Sometimes I wish I ______ in a different time and a different place. A. be living B. were living C. would live D. would have lived 参考答案:B 答案解析:wish带宾语从句,从句若使用一般过去时,是对现在情况的虚拟;从句若使用过去完成时,是对过去情况的虚拟;也可带“would/should+动词原形”,表示委婉、客气的请求。本题是对现在状况的虚拟,故用