A: Hello, sir, may I talk with you in English?
B: Of course.
A: I have learned English at school for one year. I have very few chances to talk with the English-speaking people.____ 
B: Oh, you speak English very well.
A: Thank you. By the way, ____ 
B: No, I’m not. ____ 
A: How long have you been in this city?
B: ____ 
A: I see. Do you like this city?
B:Yes. I like it very much. It’s a beautiful city.
A: Thank you.____ 

下列哪一事件促进了明朝与亚非国家的经济文化交流（    ）

下面表述完全正确的一项是（    )