⏪ 新概念英语 - [2-043] - (97版) ⏩ ⏳ 正在检测本地文件... First listen and then answer the question.先听录音，然后回答问题。How was the plane able to clear the mountains? 飞机是如何能够越过山头的？Over the South Pole 📁 请先导入本地文件， 需要帮助？点击我 ↗