临床上最常见的外阴癌是（）
A.恶性黑色素瘤
B.基底细胞癌
C.前庭大腺癌
D.外阴鳞状细胞癌
E.外阴疣状癌
参考答案：D
________just so happened that she was out when we dropped by yesterday. [ ]
A. Which
B. What
C. It
D. This
目前我军的军衔分为3等10级，其中将官3级，校官4级，尉官3级，上尉军衔符号为（）。
