⏪ 新概念英语 - [3-017] - (97版) ⏩ ⏳ 正在检测本地文件... Listen to the tape then answer the question below.听录音，然后回答下面的问题。How is the bridge supported? 这座桥是如何支撑的？The longest suspension bridge in the world 📁 请先导入本地文件， 需要帮助？点击我 ↗