哪一种改变能引起继发性椎管狭窄()
A．黄韧带肥厚
B．椎间盘向后膨隆
C．椎体后缘骨质增生
D．椎小关节增生
E．以上都是
参考答案：E
----It seems the coach isn’t pleased with my present condition, I put on some weight.
----As a gymnast, you’ll never be in until you eat less and take more exercise.
A．size
B．shape
C．order
D．height
11．填写药名
清虚热：______、______、______；
