A、Expensive and impressive TV commercials. B、Various ways of entertaining audience during intervals. C、An introduction to a popu

On a special Sunday night, millions of Americans are glued to their TVs, watching the Super Bowl, the most popular American football game of the year. They are eating pizza, chicken wings and chips and cheering every move.
    Why are Americans so crazy about American football? Well, it is more exciting than other sports. One team can lose possession of the ball in a minute, which may allow their opponents to make a touchdown. Then that team may win the game unexpectedly!
    The Super Bowl also entertains its audience with a great halftime show. The football field is turned into a stage. Then an impressive performance of dancing and singing with special effects occurs.
    Since the Super Bowl is the most-watched TV program in America, commercial broadcast is also very expensive. Big money is also spent on the commercials. They draw the viewers’ attention and advertise their image or products during the commercial break.
    Besides football, we have basketball and baseball. If you’re not a sports fan yet, come and pick a sport or a team. Go to a ball game with your family, and cheer your team on. Sports are definitely a part of American culture one should not miss.
Questions 11 to 12 are based on the passage you have just heard.
11. Why are Americans so fascinated with American football?
12. What is the passage mainly about?