支气管哮喘发作时常见的体征是（）
A.肺部呈过度充气状态
B.广泛哮鸣音
C.触觉语颤消失
D.咳粉红色泡沫痰
E.呼气音延长
参考答案：A, B, E
动脉导管未闭与室间隔缺损X线检查的主要区别点是
A．肺动脉膨隆
B．肺野充血
C．肺门“舞蹈征”
D．左心室扩大
E．主动脉结影不缩小
They advised him to give up smoking, but he didn'tlisten. So their attempts were __. [ ]
A. in style
B. in action
C. in time
D. in vain
