[音频]Read and fill in the missing words as you listen to the passage again; pay attention to the reasons why more and more working people enjoy these dangerous sports.Dennis Joyce is a 30-year-old employee of electric company in New York City. To put some (1)______ into his life, he spends many weekends and vacations white water canoeing. He is one of the growing number of Americans who in recent years have (2) ______ dangerous sports to fill the leisure hours.People who (3) ______ in (4) ______ sports usually have several things in common. Most are men. They don’t like others to think of them as (5) ______, yet they admit the dangers of their sport. And almost all of them (6) ______ sports like tennis and golf.“There’s just nothing happening in sports like tennis and golf.” Said Steve Kaufman, a 44-year-old Manhattan bill-collector who scuba dives in his spare time. According to him, the only people who come close to the experience of scuba divers are astronauts “because they ‘re in a totally (7) ______ environment, too.” Kaufman describes his sport as “a total (8) ______ from anything that can (9) ______ with your own personal sense of self.”George Weigel a 31-year-old carpenter form Pawing, New York, enjoys hang gliding. Although many risk-takers see hang gliding as the most dangerous sport of all, Weigel feels hang gliders should not be regarded as thrill seekers. Yet he said that hang gliding “(10) ______ the living daylights out of me” and that “everything else seems boring compared to it”Why do people willingly seek out of danger? According to Dr. George Serban, associate professor of clinical psychiatry at New York University, most men do it to prove their masculinity.“The nature of the male animal is to (11) ______ dangerous tasks and to (12) ______ them and to succeed,” Dr. Serban says. When life becomes boring and (13) ______, Serban says, and men do not have a chance for (14) ______ or a chance to prove their masculinity, the only other possibility for them is to undertake dangerous activities.Eric D. Rosenfeld, a 43-year-old Manhattan lawyer who has been climbing mountains for 20 years, spoke of the habit-forming nature of his sport, “it’s quite (15) ______,” he says, “You get addicted to the risk factor.”The (16)______ of the sport is what attracted Susan Tripp, a 35-year-old Manhattan lawyer, to skin diving. She likes it because “it is not something many people do.” That is also one of the reasons John Wolcott, a 49-year-old printer from Edison, New Jersey, like to go hot air ballooning. “It makes me a hero,” he said. At parties, he said, he simply introduces ballooning into the conversation, and he becomes the center of attraction for at least an hour.