标题: 1 [打印本页] 作者: rudder26 时间: 2010-9-10 21:40 标题: 1 1作者: mikeandy 时间: 2010-9-10 22:26
rudder兄，我一直不知道你是男还是女哦？作者: windypig123 时间: 2010-9-10 22:47
○During what period of Mars’ history do some scientists think it may have had large bodies of water?
Other researchers go even further, suggesting that the data provide evidence for large open expenses of water on the early Martian surface.
问题中是火星历史的那个Period。但是原文中没有提到啊 我是找的关键词large bodies of water=large expenses of water作者: windypig123 时间: 2010-9-10 22:48