为了解有无阳性结石可行（）
A．超声检查
B．泌尿系统平片
C．静脉尿路造影
D．MRU
E．放射性核素-肾图检查
参考答案：B
对吸入的气体有温暖、湿润、清洁作用的结构是[ ]
A．口腔
B．咽
C．鼻
D．喉
Have you really realized the part computers have _____ in the daily life? [ ]
A. made
B. given
C. caused
D. played
