⏪ 新概念英语 - [4-003] - (97版) ⏩ ⏳ 正在检测本地文件... First listen and then answer the following question.先听录音，然后回答后面的问题。What was the main objective of early mountain climbers? 早期登山者的主要目标是什么？Matterhorn man 📁 请先导入本地文件， 需要帮助？点击我 ↗