be another choice. It's not just teenagers who "plug in" to their music-iPods are a popular way to pass the time for all ages.

　　And if games, ebooks and music aren't enough to keep you occupied. Then perhaps you would prefer a film. The development of palm DVD technology means many commuters watch their favorite TV show or film on the way to work. With all this entertainments, it's amazing that people still remember to get off the train.

　　1. People in London do not make eye contact on the subway because they are busy________．

　　A. going to work

　　B. talking to others

　　C. thinking private things

　　D. playing games, reading ebooks, listening to music or watching films

　　2. Those who like war games can download________ to their iPhones.

　　A. IShoot B. Tube Exits

　　C. ISteam D. iPod

　　3. The underlined word "commuters" in Paragraph 3 probably means________．

　　A. Students B. passengers

C. Designers D. businessmen