文档介绍：Unit3
中国航天业开创于1956年。几十年来,中国航天事业创造了一个又一个奇迹。1970年,中国成功发射了第一颗人造地球卫星,成为世界上第五个独立自主研制和发射人造地球卫星的国家。1992年,中国开始实施载人航天飞行工程(manned spaceflight program)。2003年,中国成功发射了"神舟五号"载人飞船,使中国成为第三个发射载人飞船的国家。2007年发射了"嫦娥一号",即第一颗绕月球飞行(lunar-orbiting)的人造卫星。2013年,第五艘载人飞船"神舟十号"发射成功,为中国空间站的建设打下了基础。
China's space industry was launched in 1956. Over the past decades, China's space industry has created one miracle after another. In 1970 China launched its first man-made earth satellite, ranking China the fifth country in the world to independently develop and launch man-made earth satellites. In 1992 China began to carry out the manned spaceflight program. In 2003 China launched Shenzhou-5, a manned spaceship. The essful launch made China the third country to launch manned spaceships. In 2007 Chang'e-1, the first lunar-orbiting man-made satellite, was sent to space. In 2013 Shenzhou-10, the fifth manned spaceship, was launched essfully, laying the foundation for building the Chinese Space Station.
Unit4
郑和是中国历史上最著名的航海家(maritime explorer)。公元1405 年,明朝的统治者为了稳固边防(border defense)和开展海上贸易,派郑和下西洋(the Western Seas)。在此后的28 年里,郑和带领船队七下西洋,前后出海的人员有10 多万人,访问了30 多个国家和地区。船队纵横南亚、西亚,一直到非洲大陆。郑和下西洋是世界航海(navigation)史上的壮举,它展现了郑和卓越的航海和组织才能,同时展现了明朝的国力和国威(national strength and prestige),加强了明朝和海外各国之间的关系。
Zheng He was the most famous maritime explorer in Chinese history. In 1405 AD, the ruler of the Ming Dynasty sent Zheng He on a v