第15题: [单项选择]下列哪项是慢性肺源性心脏病的病人发生心力衰竭时应用强心剂的指征( ) A. 双肺闻及湿性啰音 B. 肺动脉高压 C. 喘憋明显 D. 合并室上性快速心律失常 E. 心率大于120次/分 参考答案:D 答案解析:[解析] 慢性肺源性心脏病应用强心剂的指征包括:①感染已被控制,呼吸功能已改善,利尿剂不能取得良好疗效而反复水肿的心力衰竭患者;②合并室上性快速心律失常,如室上性心动过速、心房颤动者;③以右心衰竭为主
第28题: [单项选择]A. He decided not to attend summer school. B. He may have difficulty working and studying at the same time. C. He’s working hard so that he can afford to go to New York. D. He’s teaching school this summer. 参考答案:B 答案解析:[听力原文] M: George is going to work in New York for the summer. W: Can he do that and go to summ