Tina was born ____ a cold winter evening. [ ]
A. on
B. in
C. at
D. of
答案：A
源区段计数管区段 source range counter range
32岁，自觉左侧小阴唇结节状物，直径1cm，伴有瘙痒。查体发现肿物处有明显色素沉着，表面有溃疡。诊断是（）.
A.外阴鳞癌
B.纤维瘤
C.外阴上皮内瘤变（VIN）
D.外阴恶性黑色素瘤
E.外阴基底细胞癌
