听力原文：Can we take the subway to the airport or should we drive？
（A) I' II get to the airport before 10:00.
（B) I don't think the subway gets there.
（C) I'll fly to New York next week.
（21)
A．
B．
C．

The word inherent in the passage is closest in meaning to
A．uncertain
B．unsatisfactory
C．expansive
D．essential

According to paragraph 3, what is the advantage of a barrel vault？
A．It was used in the Middle Ages.
B．Many arches were joined.
C．The space was larger.
D．It was a typical Roman look.

听力原文：The minutes contains many typos.
（A) Yes, the container wasn' t big enough.
（B) I should have reviewed it more carefully.
（C) Yes, it will start in 10 minutes.
（22)
A．
B．
C．

According to the passage, it will be difficult to predict weather
A．unless we learn more about chaotic systems
B．because we don't have enough weather stations
C．without more powerful computers
D．until we understand the physical laws of atoms

The Pont du Gard mentioned in paragraph 2 has all of the following characteristics EXCEPT
A．It was an aqueduct.
B．It is still being used.
C．It was built 2000 years ago.
D．It was repaired recently.