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 train B---intercity high-speed rail C---non-stop train D---dedicated rail link E---business cabins F--- first-class seats G---second-class seats H---protective fence I---passenger flow J---floating prices K---real-name purchase L---replacement ticket M---on-schedule rate N---occupancy rate O---passenger rail line P---run chart Q--- vehicle type Examples: (P) 运行图 (B) 城际高铁