A-A+
In London how does they solve the problem of
问题详情
In London, how does they solve the problem of the traffic congestion？ A．They take a completely-free bus service. B．They experimented a very cheap bus service． C．Part of the street is for buses only. D．They closed the streets to cars.
参考答案
正确答案：C
参见最后一段。
