Passage Two
Questions 29 to 31 are based on the passage you have just heard.

A．They won the tournament last year.
B．They have been trained the hardest in the tournament.
C．They have the most money to spend on their athletes.
D．They have never lost a game before.

A．Teotihuacan, once the home of 200,000 people, was the center of a large empire.
B．Many archaeologists are fascinated by the ruins of a pre-Columbia city called Teotihuacan.
C．Teotihuacan, once a major metropolitan area, was destroyed by an invasion.
D．A still unsolved mystery is why the people of Teotihnacan suddenly abandoned their city.