1 . Cheerleading has a long-standing history in the United States. Many cheerleaders begin the _________ in primary school and can continue until university. Even professional sports teams have cheerleaders. _________, those who fall in love with cheering can continue the sport into _________.

Organized cheering started at Princeton University in 1884, when the crowd created a cheer to _________ its team. In 1898, it was Tom Peebles that became the first cheerleader when he successfully led the crowd at the University of Minnesota. Cheerleading members can make some efforts to _________ injuries. In 1923, cheerleading _________ to women.

Cheerleading has grown _________ since its origins in the United States. Most college football and basketball teams currently have their own cheerleading group. Moreover, every team in the NFL has a cheerleading squad (队), as well as the _________ of NBA teams.

Cheerleading has become an exceedingly _________ program to cheer for sports teams. From 1982 to 2006, 45 major injuries __________ during high school cheerleading events, with two of those injuries accidentally __________ in deaths. Of the 45 injuries, 14 of them also led to __________ disabilities unfortunately. __________ the same years, one female college student breathed her last, while an __________ five ended up with a disability and eleven suffered from serious injuries.

To help __________ safety in the sport, the American Association of Cheerleading Coaches and Administrators has made some __________ that members must follow. With all of the high flying __________ in cheerleading, injuries have the possibility to happen. During a forward roll, the top person must begin in a non-inverted (非倒立) __________ and keep hand-to-hand contact with two bases __________. These moves must also include a spotter who can protect the top person’s head and neck in case of a __________.