下列哪项是造成硬膜外压迫的最常见的原因()
A.神经纤维瘤
B.转移瘤
C.淋巴瘤
D.脊椎退行性疾病
E.血管瘤
参考答案:D
Even if the treatment _____, there’s still no magic pill for patients in the late stage of AIDS.
A.does
B.performs
C.works
D.runs
我国林权现状是怎样的?