下述骨肿瘤的X线表现中，恶性骨肿瘤的表现为 ["A．类圆形透光区边缘增生硬化","B．骨膨胀性破坏","C．骨破坏区边缘模糊","D．骨破坏区内有残留骨小梁","E．骨破坏区边缘清晰"]
下述作为良性骨肿瘤的X线表现，错误的是 ["A．膨胀性骨质破坏","B．病变边缘有硬化","C．局部骨皮质断裂","D．病变边缘骨膜反应","E．病变边界清楚"]
脊椎结核典型X线表现为 ["A．胸椎多见","B．骨质密度增高","C．椎体楔形改变","D．多累及相邻两个椎体，椎间隙变窄","E．附件受累较多"]
"骨性"与"纤维性"关节强直的X线鉴别点是 ["A．关节间隙变窄","B．关节面糜烂","C．关节狭窄．硬化增生","D．关节狭窄，关节缘骨破坏","E．骨小梁通过关节间隙"]
雌雄同体
幼体生殖
