第9题: [单项选择]关于胆管细胞癌错误的是 A. 为肝脏恶性肿瘤的第二位 B. 起源于胆管上皮细胞 C. 增强扫描动脉期肿瘤呈明显团块样强化 D. 间质中常含黏液成分 E. 常见肿瘤远侧胆管扩张 参考答案:C 答案解析:胆管细胞癌增强扫描动脉期病灶较平扫时边缘清楚,病灶有不均匀强化,但增强程度明显低于正常肝实质。
第28题: [单项选择]According to the author, ______. A. all those who get on well with each other are friends B. friends are closer than people who just get on well with each other C. everyone understands clearly how to make friends D. every student has six friends 参考答案:B