I  have a good friend．1 name is Peter．We study in Beijing Sunshine Secondary Schoo1．We are in the same(同一个)class．He sits in front of 2 ．His favourite lesson is Music．He  3many CDs．He likes 4 music very much．He likes playing football , t00．After school we  often   play  football in the  5 ．He is very helpful．We often help each 6 ．
   Peter  is  not a Chinese．He is from 7  ．He comes to Beijing 8  his family．His father is  a doctor and his mother is a nurse. They work from Monday    9   Friday．At weekends，his mother  likes shopping and his father likes fishing．Sometimes they go to the park．They all like Chinese  food．They  10   very happy．

        沉醉是一种难得的情怀，那种沉迷与陶醉，那些场景和故事，往往铭刻在记忆里：沉醉于音乐、沉醉于书法、沉醉于阅读，沉醉于风景……沉醉于各种艺术或文艺活动带给人的真、善、美中，心灵就会优雅而充实。
       请以“沉醉”为题写一篇作文。
       要求：①文体自选，诗歌除外；②不少于600字；

如图所示，某工程队准备在山坡（山坡视为直线l）上修一条路，需要测量山坡的坡度，即tanα的值．测量员在山坡P处（不计此人身高）观察对面山顶上的一座铁塔，测得塔尖C的仰角为37°，塔底B的仰角为26.6°．已知塔高BC=80米，塔所在的山高OB=220米，OA=200米，图中的点O、B、C、A、P在同一平面内，求山坡的坡度．（参考数据sin26.6°≈0.45，tan26.6°≈0.50；sin37°≈0.60，tan37°≈0.75）