W: Why don't you sit down? Now, there are several questions I must ask you if you don't mind. M: Not at all. Go ahead. W: What is the purpose of your visit to the United Stated? M: I am going to attend a conference on air pollution. It will be held in the first two weeks of February at the University of California. W: The University of California? M: Yes, here is the official letter of invitation. W: I see. Fine. When do you want to go? M: I'd like to leave in mid-January if my passport is ready by then., Question: Why is the man going to the United States? (A) To attend a conference. (B) To visit his friends. (C) To travel.
(A) To attend a conference.