A 2025年 B 2030年 C 2050年 D 2040年

A 6.07 B 3.72 C 5.65 D 6.11

A 万有引力 B 惯性 C 开普勒三定律 D 相对论

A 该项目有利可图 B 该项目持续亏损，不值得投资 C 该项目虽然现在亏损，但有望获利 D 该项目不亏也不赚

A 10日 B 20日 C 30日 D 5日

A A broader perspective could lead us to develop new technology and modify our larger habitat through “space engineering”. B Colleagues of the author’s at Harvard produced synthetic in the laboratory and will export it on a spacecraft. C The influence of individuals is negligible on the cosmic scale. D Within the next decade, the Large Synoptic Survey Telescope (LSST) will deliver 500 petabytes of images from our cosmic environment.

A positive B optimistic C sarcastic D negative E

A NASA and ESA rovers excavate the surface of Mars. B Detect enigmatic signals or artificial infrastructure produced by technological Civilizations. C The discovery of alien life. D Search a much larger volume though “space archaeology”.

A Try to serve as one of its leading actors. B Refuse to be awed while watching the rich spectacle of events on Earth. C Subscribe to a streaming media service to broadcasting the universe. D Use our telescopes to capture the images from the cosmic environment.

A astronomer B journalist C science fiction writer D philosopher