正常小儿呼吸音较成人响，呈________，应注意听________、________有无异常。
参考答案：支气管肺泡呼吸音；腋下；肩胛间区及肩胛下区
Meeting again by chance, Lucy and Amy are delighted to the friendship where it left out years ago.
A．break up
B．pick up
C．bring up
D．build up
A．
铁轨下铺枕木
B．
坦克装有履带
C．
刀刃磨得很薄
D．
书包背带很宽
