The journey to and from school is a major reason for stress throughout the world．And the journey can even make you sick．Yet one city has found a way to make its train journeys more comfortable while offering enjoyable reading at the same time，just like in a library．

    On two train lines in Beijing，the underground cars（车厢）have been turned into libraries，but they're not traditional libraries．Instead of real copies of books，the underground cars provide e﹣books．

    When passengers get into the cars，they can see pictures of different book covers on the walls and even doors．Passengers can browse（浏览）the books just like in any other library．Once they've made their choice，they can use a mobile phone to scan the QR code（扫二维码）on the cover of their chosen book．The QR code leads to an e﹣book app，on which the passengers can read the e﹣book for free．And they can still enjoy the book on the app even after leaving the train．

    Thanks to the underground's idea，passengers can discover new stories every time they take a ride．In this way，the journey will not be boring any longer，and passengers will not complain about the journey either．Instead，they can benefit（受益）a lot from it．

    Reading e﹣books can really make the journey more enjoyable﹣it's one of the things that successful passengers usually do．In fact，in this kind of special library，the books can go on forever！

（1）How do passengers usually feel about their journeys to and from work？　　

A． Comfortable．

B． Enjoyable．

C． Painful．

D． Cheerful．

（2）Which statement is TRUE about passengers in paragraph 3？　　

A．They read paper books on the train．

B．They can browse the QR code to buy the books．

C．They can scan the QR code to buy the books．

D．They can enjoy the book on the app after the ride．

（3）What does "it" refer to in the paragraph 4？　　

A． The journey．

B． The story．

C． The passenger．

D． The underground．

（4）Which is the best title for the passage？　　

A． The Best Train Ride．

B． The Enjoyable Journey．

C． The Future Library．

D． The Moving Library．