⏪ 新概念英语 - [4-043] - (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 does the 'uniquely rational way' for us to communicate with other intelligent beings in space depend on? 我们与太空其他智能生命通信的'唯一合理方式'依赖于什么？Are there strangers in space? 📁 请先导入本地文件， 需要帮助？点击我 ↗