下述哪些因素与肝癌发生关系密切()
A.坏死后肝硬化
B.黄曲霉污染的食物
C.华支睾吸虫胆道感染
D.肝细胞不典型增生
E.病毒性肝炎
参考答案:A, B, C, D, E
-- There is nobody here. Let's play football.
-- No, we can't. My father often tells me _______ in the street. It's dangerous.
A. to play B. don’t play C. not to play
所谓“自尊”是指个体对自己的特质和特性的稳定性念。