Roommate: Why are there so many people in the hall today? I bet even the youngest of them gotta be over 60. May: They are schoolmates of our university. Thereis a reunion of our university. Roommate: Look, May, the man in grey suit looks like the mayor of our city. May: That's him. He graduated from our university. And there are also other important people here: scientists, researchers, engineers, managers, etc. Roommate: Really? I hear that the statue besides our school gate is donated by them. May: Yes, I know that. They have given lots of money to our university. Roommate: Why? May: The
