对于外阴鳞癌的发病因素以下哪项说法是恰当的？（）
A.外阴癌多为单发疾病，不易与宫颈癌等同时发生
B.患有外阴色素减退疾病的患者，半数以上可-以发展成为外阴癌
C.目前研究湿示}tPV只与宫颈癌的发病密切相关，而与外阴癌的发病无关
D.免疫抑制与外阴癌的发病有直接关系
E.外阴部若受到 * * 瘤、尖锐湿疣等的长期刺激有发展成外阴癌的可能
参考答案：E
请仔细阅读下面的一篇短文，按信息表中的项目要求填写信息。 Dear Tom, Thank you for your postcard. I show it to some of my friends at school. Three other people in my class have friends in other countries, too. Now I want to tell you something about my family. My father and mother are teachers. I have a brother and a sister. My sister works in a middle school and my brother is studying at a university（ 大学 ）. I am a middle school student. I am 12 years old. I am tall and a little fat. I have short hair. I like reading and playing the guitar. I always play it on Saturdays and Sundays. I like my English teacher very much. Because she is kind to us and her class is fun. Could you give a few photos of yours? I want to know what you look like. Yours, Huang Lei
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