Passage One Questions 26 to 28 are based on the passage you have just heard.

A．This need to use the services of people who were not physically near.
B．This need to have a common set of values.
C．The fear of things that were more different than what people were used to.
D．This need to store wealth.

A．Because of its size.
B．Because of its fuel.
C．Because of its complicated engine.
D．Because of its burning time.