Task 4 Directions: The following is a list of expressions related to High Speed Rail. After reading it, you are required to find the items equivalent to those given in Chinese in the table below. Then you should mark the corresponding letters in order of the numbered blanks, 53 through 57, on the Answer Sheet. A—bullet trainB—intercity highspeed rail C—nonstop trainD—dedicated rail link E—business cabinsF—firstclass seats G—secondclass seatsH—protective fence I—passenger flowJ—floating prices K—realname purchaseL—replacement ticket M—onschedule rateN—occupancy rate O—passenger rail lineP—run chart Q—vehicle type Examples: (P) 运行图(B) 城际高铁 53. ()实名购票()一等座 54. ()直达列车()浮动票价 55. ()客流()补票 56. ()正点率()防护栏 57. ()车型()商务车厢