题目

如图甲所示，让一束太阳光通过棱镜射到白屏上，在光屏上就形成一条彩色光带，其颜色自上而下依次是                   不同颜色的光．若在白屏上贴一张红纸(图乙)，则光屏上就出现            ．  答案：红、橙、黄、绿、蓝、靛、紫(或七种)  红色解析: —________ great fun we had at the party last night!—Yes， it was so exciting that everyone was happy.A. How a B. How C. What D. What a