{{B}}quEstions 32 to 35 ArE BAsED on thE pAssAgE you hAvE just hEArD、{{/B}}

A．thE workErs on thE unDErgrounD plAtForms wErE rEplACED By mAChinEs.
B．it BECAmE thE First ComplEtEly AutomAtiC rAilwAy in thE worlD、
C．A、ComplEtEly AutomAtiC linE wAs ADDED to its nEtwork.
D．its trAins BECAmE ComputEr-ControllED、