第11题: [单项选择]CT显示右上肺内3cm类圆形软组织密度结节,边缘分叶状,有毛刺,可见胸膜尾征,外侧可见钙化斑,病灶周围数个软组织密度小结节影,诊断为() A. 周围型肺癌 B. 结核球 C. 炎性假瘤 D. 球形肺不张 E. 非典型性肺炎 参考答案:B 答案解析:结核球(又称结核瘤):一般为单个、直径2cm以上的由纤维组织包绕干酪样结核病变,或阻塞性空洞被干酪物质充填而形成的球形病灶,呈圆形、椭圆形或分叶状,多位于肺的上叶。一般表现为球形块状影,轮廓清楚,密度
第29题: [单项选择]Questions 22 to 25 are based on the conversation you have just heard.A. How to care for precious metal. B. A standard unit for measuring weight. C. The value of precious metals. D. Using the metric system. 参考答案:B 答案解析:[解析] 22-25 W: Dr. Thomas This is Keet Bradley from the Daily News. (22) I’d like to ask you s