The traffic on the main streets has a longer green signal than （ ） n the small ones.
A、one
B、this
C、that
D、it
答案是:C
解析：【答案】C
【考情点拨】本题考查 that的代替功能。
【应试指导】句意：主干道上的交通绿灯时间比小路上的长。英语中有时为了避免重复，可用that和those 代替 前面提到的名词，如"The population of China is much larger than that of Japan.”,该句中that指代前面提到的the population。又如“His views are close to those of the Socialist Party.”,该句中those指代前面提到的the views。故 选C。
