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    China has splendid culture with a long history. Chinese opera is one of the ____(old) dramatic art forms in the world.During the Tang Dynasty,the Emperor Xuanzong established an opera school ____ the poetic name Liyuan (Pear Garden). Since the Yuan Dynasty, encouraged by court officials and emperors, it____(become) a traditional art form. During the Qing Dynasty,____became fashionable among ordinary people. Performances ____(watch) in tearooms, restaurants, and even on temporary stages.

    It developed from folk songs, dance, talking, antimasque(滑稽戏) and especially distinctive dialectical music. Gradually it combined music, art and literature into one performance on the stage.____ (accompany) by traditional musical instruments, actors present unique melodies which may sound strange to ____(foreign) as well as beautifully written dialogues, which are of high literary ____(valuable). These dialogues also promoted the development of distinct literary styles, such as Zaju in the Yuan Dynasty. For Chinese, especially older folks,____ (listen) to this kind of opera occasionally is ____real pleasure.

如图所示为电工师傅用移动式升降机抢修一条动力外线，已知升降机的箱蓝重900N，用升降机将重600N的王师傅匀速提升8m，升降机做的有用功____ J，升降机的机械效率是____ ．（伸缩杆和所携带的工具质量不计）

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北京、张家口联合举办2022年冬奥会，张家口市崇礼县承办雪上项目比赛。张家口市崇礼县境内山连山，沟套沟，连绵不断，森林茂密，冬季平均气温-12℃，积雪时间从11月份至次年3月份，年平均积雪厚度70厘米，近年建成了多家知名滑雪场。为保障北京2022年冬季奥运会北京市区、北京市延庆县、张家口市崇礼县三地赛场间的交通服务，北京将建设连接北京－延庆－张家口三地的高速铁路和高速公路。

简述张家口市崇礼县承办2022年冬奥会雪上项目比赛的优势。