Colours of the Rainbow
练习内容
See that rainbow in the sky? It's red, orange, yellow, green, blue, indigo, and purple.\nRed on the top, then orange, yellow, green, blue, indigo, and then purple at the bottom.\nEvery rainbow has the
See that rainbow in the sky? It's red, orange, yellow, green, blue, indigo, and purple.\nRed on the top, then orange, yellow, green, blue, indigo, and then purple at the bottom.\nEvery rainbow has the