腰椎退变，腰椎间盘变性、突出，压迫神经根、脊髓引起临床症状与体征，称为（）。
参考答案：腰椎间盘突出症
The audience were ______ by his _______ performance on the stage.
A．amazed; amazed
B．amazed; amazing
C．amazing; amazed
D．amazing; amazing
洋地黄与钙剂应避免同时应用，如有必要至少应间隔( )
A．2小时B．4小时C．7小时D．8小时E．10小时
