肿瘤以组织发生为依据，按肿瘤的分化成熟程度及其对人体的危害程度，分为（）A、癌症 B、

情景交际。从方框中选择适当的句子补全对话（其中有两项是多余的）。（5分）
A: Mr. Wilson, may I ask you some questions?
B: Sure.
A:     小题1:  
B: Three days.
A:   小题2:  
B: Many places , such as Xuanwu Lake Park and Zijing Mountain.
A:     小题3:  
B: It’s beautiful and quiet. It has changes a lot during the past two years.
A: Oh?    小题4:   Have you ever been here before?
B: Yes. I came here to give a report on food safety two years ago.
A: Then this time you are here for…?
B: Just for a holiday.
A: I’m very glad you like our city.     小题5:  
B: Thank you.

A. I hope you will have a good time. B. It seems that you have known our city very well. C. What do you think of our city? D. The people here are friendly. E. How did you visit the city? F. What places of interest have you visited? G. How long have you been in Nanjing?