导致颈椎病的原因主要是（）和（）两个方面。
参考答案：颈部的损伤｜颈椎的退行性变
医院的噪声是怎样产生的？如何预防？
Please help yourself to the fish.（）
A.Thanks, but I don't like the fish.
B.Sorry, I can't help.
C.Well, fish don't suit me.
D.No, I can't.
