下列哪种病变或组织增强CT扫描无强化()
A.动静脉畸形
B.炎症
C.囊变
D.肿瘤
E.正常软组织
参考答案:C
It made Mary’s parents excited Mary entered the final in the tennis match.
A.what
B.whether
C.when
D.that
化脓性关节炎最常见下列哪种致病菌?()
A.肺炎双球菌
B.溶血性链球菌
C.大肠埃希菌
D.金黄色葡萄球菌
E.脑膜炎球菌