骨关节炎的原发病变是
A.透明软骨退行性变B.骨赘形成C.非特异性滑膜炎D.关节囊纤维变性增厚、挛缩
参考答案:A
写出与前面词语相对的词语。
黄鹂对( ) 翠柳对( )
西岭对( ) 千秋对( )
— Whose T-shirt is this?
— It _____ be John's. It's much too small for him. [ ]
A. may
B. must
C. can't
D. shouldn't