6、slargepublicbuses.C.Inrushhoursyoucannotgetaseatinaminibus.Cparagraph4Read the paragraph4 and answer the questions.1)HowmanyundergroundlinesarethereinBeijing?2)Howmuchdoesaone–waytripcost?Therearefourlinesnowandseverallinesareunderconstruction.Aone-waytripcost3yuan.Readthelastpartan