[单项选择]骨样骨瘤的MRI表现中,哪项错误() A. 肿瘤的未钙化部分在T1WI上呈低到中等信号,T2WI上呈高信号 B. 部分肿瘤可伴有邻近关节积液和滑膜炎症 C. 瘤巢周围骨质硬化在T1WI和T2WI上呈低信号 D. 肿瘤周围的骨髓和软组织呈长T1、长T2信号 E. 肿瘤的钙化部分在T1WI和T2WI上均呈高信号
第15题: [单项选择]What has happened to them A. He works in hospital. B. He has gone to school. C. He is ill. 参考答案:C 答案解析:[听力原文] M: I haven’t seen Tommy for days. F: He is in hospital.