阅读下面短文，根据第73至第75小题的具体要求，简要回答问题。
Every January， Breckenridge hosts the International Show Sculpture Championships. Fourteen teams travel from all over the world to
Switzerland to compete. Teams sculpt for sixty-five hours over five days. Each team hopes that when the time is up， its sculpture will be judged the best
As the championship begins， the fourteen teams are faced with huge blocks of snow that weigh twenty tons each. The sculptors bring out their
vorite tools that work best on the hard iced snow， but they are not allowed to employ tools that use electricity.
Most teams are inspired by what they have seen in daily life. For example， one team carved a teapot with tea pouring out. Another team sculpted a little cat on its hind feed（后脚） reaching into a fish bowl complete with water ripples（涟漪） and a crab（螃蟹） trying to attack the cat. In 2006， Team USA sculpted a golden dog looking at its image reflected in a mirror. To create the effect that the little dog saw its reflection in the glass， the artists carved two dogs facing each other with their paws （脚爪） touching.
As the final hours of the competition tick by， exhausted team members add last-minute details. They use small brooms to brush off snow caught in tiny holes. One team member counts down the last five minutes while others are busy cleaning up the tools. If they leave any tools behind， they will be out. When the whistle blows， everyone must step away from the sculpture. The judges then vote on creativity， technical skill， and visual impact（视觉效果） of the designs
In 2006， Team USA took firs place for their golden dog sculpture titled “Discovery”。 But the competition is not just about medals and ribbon. “It‘s not about the prize，” said Rob Neyland， Team USA’s captain. “It‘s about touching the audience.”
Every year， as the championship ends， each team is already dreaming of the next masterpiece it will design.
小题1:What kind of tools are the sculptures NOT permitted to use？（回答词数不超过6个）
小题2:What gives the sculptors ideas for their creative work？（回答词数不超过9个）
小题3:Why did Team USA win the competition in 2006？（回答词数不超过15个）