【正确答案】 B

【答案解析】[听力原文] The Super Bowl is the annual championship game of the National Football League (NFL), the highest level of professional American football in the United States, which is the end of a season that begins in the late summer of the previous calendar year. The day (usually Sunday), on which the Super Bowl is played, is called 'Super Bowl Sunday'. It is now considered by some as an American national holiday. It is the second-largest day for U.S. food consumption, after Thanksgiving Day. In addition, the Super Bowl has frequently been the most watched American television broadcast of the year; the four most-watched broadcasts in U.S. television history are Super Bowls. The Super Bowl is also among the most-watched sporting events in the world, almost all audiences being North American. Because of the high viewership, commercial airtime during the Super Bowl broadcast is the most expensive of the year, leading to companies regularly developing their most expensive advertisements for this broadcast. As a result, watching and discussing the broadcast's commercials has become a significant aspect of the event. As the popularity of the game increased, a trend where popular singers and musicians performed during its pre-game ceremonies and the halftime show, or simply sang the national anthem of the United States, emerged. Popular singers and musicians including Michael Jackson, Madonna, Prince, The Rolling Stones, The Who, and Whitney Houston have performed during the event's pre-game and halftime ceremonies. What is Super Bowl?