A. Because .he’s traveling everywhere. B. Because he thinks his life is dull. C. Because people think he’s an interesting life. D. Because he doesn’t worry about anything. 参考答案:A
第23题: [单项选择]有关肾血管平滑肌脂肪瘤的CT诊断,下列哪项最有意义() A. 肾实质肿块,境界清楚而密度不均 B. 增强扫描可见部分瘤组织强化 C. 瘤内含有脂肪成分 D. 三种成分缺一不可 E. 合并结节硬化 参考答案:C 答案解析:瘤内有脂肪成分,对于肾血管平滑肌脂肪瘤的CT诊断最有意义。