听力首页 听力教程 VOA慢速 英语歌曲 外语下载 英语小说 英语词典 在线背单词 听力论坛 韩语学习
听力专题 英语教材 VOA标准 英语动画 英语考试 资源技巧 英语翻译 单词连连看 听力家园 德语学习
听力搜索 英语导读 BBC英语 英语视频 英语电台 英语QQ群 外语歌曲   英语游戏 英语网刊 日语学习
当前位置: 英语听力论坛 » 【六级教室】 » 六级练习2013.09.22
返回列表 发帖

六级练习2013.09.22


       
       




Science fiction writers have often imagined humans going to live on the Mars. But these days, (1)____________________________.
It has a great deal to recommend it, since it might solve the problem of overcrowding on the earth. But obviously, it would not be worth making the effort unless people could live there naturally. (2)_________________________, this might be possible.
But in fact it is mostly carbon dioxide. Apart from that, there are other problems to be overcome. For example, (3)___________________________to 15 degrees above it.






本帖隐藏的内容需要回复才可以浏览

scientists are taking the idea seriously

TOP

scientists are taking the idea seriously
If the atmosphere were like that of the earth
the temperature would have to be raised from 6 degrees below zero

TOP

返回列表