A、It’s cheap. B、It’s fast. C、It’s comfortable. D、Both B and C. D答案在对话末尾。

W: What is the most common means of transport for Chinese people nowadays?
M: To most Chinese people, the most common means of transport is the bus.
W: Does the railway have less of an influence now than previously on their lives?
M: Yes. Now people can travel by car, or by plane, not like before, when they had to depend on the railway.
W: As far as I know, many residents in big cities are very interested in purchasing personal cars. Have these cars increased or reduced the burden of city transport?
M: More and more cars have added to the burden of city transport, because they take up a lot of road space otherwise available to public transport.
W: Does the government encourage or curb the purchase of personal cars?
M: Now the government neither encourages nor curbs the purchase of personal cars, but I think there will be a policy in the future to curb the purchase. Have you traveled much in China, Linda?
W: No, not much, but I travel quite a lot in Shanghai every day.
M: Do you think Shanghai transport is efficient?
W: Yes, I do. I think the Shanghai Underground is marvelous. I always travel by tube because it’s fast and comfortable.