【背景材料】2 0 0 3年1 0月1 5日9时,我国自主研制的“神舟”五号载人飞船在酒泉卫星发射中心用“长征二号F”运载火箭发射成功,将中国第一名航天员杨利伟送上太空,飞船准确进入预定轨道.2 0 0 3年1 0月1 6日6时,“神舟”五号载人飞船在内蒙古主着陆场(东经1 1 1°2 9′、北纬 [Background Materials] At 0900 on January 15, 2003, China’s self-developed “Shenzhou” No. 5 manned spacecraft was successfully launched at the Jiuquan Satellite Launch Center with the “Changzheng No. 2” launch vehicle, which will be the first of its kind in China. One astronaut, Yang Liwei, was sent to space and the spacecraft accurately entered the scheduled orbit. At 6 o’clock on the afternoon of October 16, 2003, the “Shenzhou” No. 5 manned spacecraft was at the main landing site in Inner Mongolia (longitude 1 1 1° 2 9 ’,north latitude