优质解答
答案：1. It's gunpowder
2. people use computers to let fierworks show go well with music.
3. Such as National Day, Newyear's Day, and at events like Olympics.
答案：1. It's gunpowder
2. people use computers to let fierworks show go well with music.
3. Such as National Day, Newyear's Day, and at events like Olympics.
