解:光路图如图所示:
根据折射定律,则有:n= 同类题1 下列关于某人的体细胞结构与功能的叙述,错误的是( )
My father often does many kinds of sports, such as ____ (playing/to play) football and swimming.
抛物线y=2(x-3)2+1的顶点坐标为____ .
我市黄山湖公园人工湖吸引了不少游客,游人在湖边看到绿树在水中的倒影是光的____现象,看到水中的鱼儿是光的____现象形成的____像(填“实像”或“虚像”)