Directions: The following is a list of expressions related to High Speed Rail. A—bullet train J—floating prices B— intercity high-speed rail K—real-name purchase C— non-stop train L—replacement ticket D—dedicated rail link M—on-schedule rate E— business cabins N—occupancy rate F—first-class seats O—passenger rail line G— second-class seats P—run chart H— protective fence Q—vehicle type I—passenger flow Example: (P) 运行图 (B) 城际