新概念英语文章教程汇总和更新

　　For most of the earth's history they havebeen the only form of life on our planet. As Earth-dwellers, we... [查看全文]

　　In the first instance, we would be looking for plant life, rather than 'little green men'.The life fo... [查看全文]

　　Even a telescope in orbit round the earth, like the verysuccessful Hubble telescope, would not be suitable be... [查看全文]

　　The development of such a telescope will be one of the greatastronomical projects of the twenty-first century.... [查看全文]

　　Alternatively, if the star were small, the life-supporting planet would have to have aclose orbit round it an... [查看全文]

　　Whether a planet can support life depends on the size and brightness of its star, thatis its 'sun'. ... [查看全文]

　　The first question to answer iswhether a planet can actually support life. Inour won solar system, for exampl... [查看全文]

　　来自地球的问候　　Recent developments in astronomy have madeit possible to detect planets in our won MilkyWay an... [查看全文]

　　I realized sadly that I had beencompletely defeated by their ingenuity. The ants had been quick to find an ... [查看全文]

　　I got up early next morning hoping to find that the ants had givenup in despair. Instead, I saw that they... [查看全文]