Which country has started the world's longest metro line?
A.
Australia
B.
Japan
C.
China
D.
USA
Answer: Option C
Explanation:
Shanghai has opened two new metro lines, upholding its rank as the city with the largest Metro network in the world. With the new lines, the total length of Shanghai’s metro network has extended to 831 km, continuing to be the longest in the world. China’s Shanghai opened two new metro lines – Line 14 and Phase One of Line 18.