听力原文：At major college or high school sports events, cheerleaders, both male and female

听力原文： At major college or high school sports events, cheerleaders, both male and female, jump and dance in front of the crowd, and shout the name of their team, running around, yelling "Go Team Go!" The first cheerleader ever was a man.

In 1898, Johnny Campbell jumped in front of the crowd at the university of Minnesota and shouted for his team. He shouted "Hurrah, Minnesota!" This was the first organized show, or yell. For the next 32 years, cheerleaders were men only.

Cheerleading is not just about cheering. They practice special shows, dances, and athletic shows. The men throw the women high in the air, and catch them. The team members climb on each other's shoulders to make a human pyramid. They yell and dance too. It is like human fire works. Of course, they may often suffer serious knee and wrist injuries and bloody noses. Cheerleaders have their own contests every year at local, state and national levels. And a crowd shouts for them. It is not fair to think cheerleading is just being cheerful and lively and having a loud voice. Cheerleading is a sport in itself.

How should cheerleading be viewed according to the passage？

A．It is just a lot of cheering.

B．It mainly involves yelling.

C．It mainly involves dancing.

D．It is competitive in nature.