Question

The traffic on the main streets has a longer green signal than _______ on the small ones.

A．one

B．this

C．that

D．it

Answer 1

C

句意：主干大道的绿色交通信号灯的时间要长于小干道的信号灯。One泛指可数名词单数；that泛指不可数名词；it指代前文出现的事物。
【考点定位】指示代词的用法。