You’ve probably seen the term extreme sports in magazines, heard about it on the evening news, and seen it     1     (advertise) in sporting goods stores. So, what exactly are extreme sports?

During the 1970s and 1980s, the term “extreme sports”     2     (use) for sports that were often dangerous and could result in injury or even death. Today, however, extreme sports also include     3     (activity) that give a feeling of adventure without     4     (necessary) putting your life in danger. For every extreme sport there is professional equipment that has been   developed     5     (protect) your body and improve your performance.

Extreme sports cover a wide     6     (vary) of activities. Some extreme sports have developed     7     a familiar activity, like mountain biking. Some extreme sports may not be well-known. Bouldering, for example, is a type of rock climbing in     8     no rope is used. It usually takes place in an area with large rocks or in climbing centers.

People have never stopped     9     (develop) new types of extreme activities. These sports are gaining     10     large audience and growing in popularity, especially among young people.