宫颈癌的病因主要是
A．病毒感染B．包皮垢的影响C．慢性宫颈炎和宫颈裂伤D．早婚、早育、多产E．以上多种因素的协同作用
参考答案：E
词汇运用，根据句意及首字母或汉语提示完成单词。
1. Tomorrow is rny birthday. Would you please help me o____my birthday party?
2.If you go to visit her, you can buy some_______(花)．
3．We are going to have a class_________(扫除) this Friday afternoon.
4．My uncle is an____(代理人),and he is very busy every day.
5. You must finish your homework____(今晚). Mr. Green will check it tomorrow.
属于旅游者的投诉心理的是（）。
A.要求尊重
B.要求补偿
C.找茬
D.寻求发泄
