膀胱造影显示膀胱壁有突向腔内的菜花状充盈缺损，应考虑（）
A.膀胱非上皮肿瘤
B.膀胱炎
C.膀胱结石
D.膀胱癌
E.膀胱结核
参考答案：D
A villager, who __________last night, claimed to ________ a UFO flying across the sky. [ ]
A. had stayed up; see
B. stayed up; see
C. stayed up; have seen
D. has stayed up; have seen
宫颈癌的好发部位是（）
A.鳞状上皮
B.鳞状、角化上皮交界移行区
C.鳞、柱状上皮交界移行区
D.鳞状上皮化生区
E.不典型增生区
