BelowaresomechoicestogettingaroundLondonbypublictransportationTubesTheLondonUnderground，commonlyreferredtoasthe‘Tube#39;，istheoldestandmostextensiveundergroundsystemintheworldandpervades（遍及）boththelif

问题：BelowaresomechoicestogettingaroundLondonbypublictransportationTubesTheLondonUnderground，commonlyreferredtoasthe‘Tube#39;，istheoldestandmostextensiveundergroundsystemintheworldandpervades（遍及）boththelifea

答案：↓↓↓

耿中元的回答：

网友采纳　　46．B由"Tubes"部分"Inthecitycentre（zoneone）asingleticketcosts£1.50，otherwisesinglefaresare£0.90（onezone）upto£2.20（fourzones）．Carnetsoftenzone-oneticketsc...