明天有一场英语考试,请各位大大帮我想一篇作文吧,在此谢过~

That's a hard one to answer as there are so many reasons. Some do it for the sense of challenge, others do it to relieve boredom. Most people do it for the new experience. The excellence of extreme sports consists in speed and danger.
So why do people do them? The reasons are as follows.People like to be safe, but they also love excitement.Some people find riding a bicycle along a mountain road exciting;others want to ride down the mountain!Extreme sports are invented by people like these who are always looking for extreme excitement.Where do they come from?Some extreme sports like bungee jumping are new inventions;others simply take old sports to new levels.For example, people have skied for hundreds of years, but recently people have started skiing by jumping out of helicopters onto the highest mountains in the world!