【題組】171.What is the primary function of the Sliver Line?
(A)To provide a direct connection between downtown Denver and several major suburbsand residential areas.
(B)To serve as an express line between the downtown core and Denver InternationalAirport.
(C)To offer a reliable and convenient transportation option for residents of the city'ssuburbs and outlying neighborhoods.
(D)To provide a circular route around the downtown core, allowing commuters to easilyaccess various parts of the city center.