Is Seoul known as

30. Is Seoul known as
people
A. a technology capital
B. a technology capital and popular tourist destination
C. ancient and technology capital
31.How long does it take to travel from Seoul to Incheon Airport by train?
A. a forty minute train ride
B. a forty minute motorbike ride
C. a forty minute bike ride
32. What is the main idea of the passage?
A. about cities around Seoul
B. about tourist destinations
C. something about South Korea's capital