单项选择题
[听力原文]6-7
M: Our flight has been delayed for two hours.
My parents are waiting for me at London Airport.
W: Where do you come from
M: Beijing I was at a two weeks’ conference there on Space Technology.
W: How interesting! I was there with a tour.
M: Really Which places did you visit
W: Apart from Beijing, we went to Nanjing, Shanghai, Xi’ an, Hangzhou and Guangzhou.
M: Did you enjoy it
W: Very much. Was this your first trip to China
M: Oh, no. I go almost every year.
A．He made a travel.
B．He attended a conference.
C．He gave a speech.
D．He visited his parents.