Linda felt someone ________ on her way home from work yesterday evening, and therefore she was frightened and looked back from time to time.

A．followed

B．would follow

C．had followed

D．was following

下图为“城市轨道交通（地铁）对住宅空间分布影响示意图”。读图回答下题。

A．对住宅分布的影响力逐渐减小

B．对住宅影响的辐射范围变大

C．有利于市中心人口的疏散

D．站点附近住宅开发密度较过去变低