While the government says there is a(n) ________supply of houses，prices of apartments have been going up these years.

A．parallel

B．absent

C．abundant

D．short

发生筋膜间隙综合征的主要原因是（）。

A.主要神经损伤

B.肌肉痉挛

C.筋膜间隙内高压

D.病变以下血供受阻

E.静脉血栓