[单项选择]What is the passage mainly about A. The development of transportation. B. The change of urban life. C. Supply and demand determines land use. D. The effect of mass transportation on urban expansion.
参考答案:D 答案解析:[解析] 这题问的是本文的中心思想,这在第一段的第一句可以得到体现,即“Mass transportation revised the social and economic fabric of th