【单选题】完型填空prohibitedX-ray scannersentrancesmetal detectorsgo throughfetch完型填空There are security channels in each station. Security staff are placed at the ___1___ of train stations with equipment like _____...
【简答题】Metro Pocket Guide Metrorail(地铁) Each passenger needs a farecard to enter and go out. Up to two children under ago five may travel free with a paying customer. Farecard machine are in every station. B...