题目内容

Stella’s house was seldom visited by the others since the death of her husband.

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The story tells us a lady whose husband had died suffered loneliness.

The title "Delayed Delivery" means the dog was delivered late because the staff were on Christmas holiday.

请指出下列肺炎病理改变的X线表现。肺部炎症破坏后发生钙盐沉积（）

A. 渗出灶
B. 增殖灶
C. 纤维化灶
D. 空洞
E. 钙化灶

男性，56岁。有动脉粥样硬化病史。突然感到剧烈刀割样胸痛2小时，向背部放射。体检发现主动脉瓣区可闻及舒张期杂音。本病的好发部位是

A. 升主动脉
B. 主动脉弓
C. 降主动脉
D. 主动脉峡部
E. 升主动脉根部和主动脉峡部