下列病变中不属于癌前病变的是：
A．黏膜白斑
B．慢性萎缩性胃炎
C．乳腺纤维囊性增生
D．慢性皮炎
E．慢性宫颈炎
参考答案：D
在下面的自我介绍中，填入合适的词。
Hello. My name is Jim. I'm from England. My favourite subject (学科) is 1______. My favourite sport is
2______, and I often play football with my friends. My favourite colour is 3______. I have a 4______ family.
They are: my father, my mother and I. My parents 5______ me.
立宪政府应该具备哪些条件和要素？
