问题
选择题
Recently, employees at the Shanghai Metro’s Railway Station Stop have been busy learning dialects from other parts of the country, ___________ aims to provide better service to travelers from outside the city.
A．where
B．that
C．which
D．it
答案
答案：C
考查定语从句。句中which引导非限定性定语从句，指代前面的一句话，故选C。