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[托福阅读TPO] 托福阅读TPO25(试题+答案+译文)第1篇:The surface of Mars
【1】The surface of Mars shows a wide range of geologic features, including huge volcanoes-the largest known in the solar system-and extensive impact cratering. Three very large volcanoes are found on..2014-10-09 编辑：alice
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[科技新闻] NASA确认火星表面存在流动的液态水
科学家首次确认在目前的火星表面有液态水的流动，这一发现令人们愈发开始猜测，如果这个星球上曾经出现生物，那么也许到现在仍有存活。2015-10-08 编辑：shaun
