7、esarecheap.B.Youcanavoidtherushhour.C.Youcanalwaysgetaseat.4.WhichisTRUEfortheundergroundlinesinBeijing?A.Theyarefastandconvenient.B.Theyareverycomfortableevenintherushhour.C.StationnamesaremarkedinChinese.5.WhichwillyouchooseforavisitofnarrowalleysofoldBeijing?A.Taxis. B