中秋节晚 星海音乐厅门前的高音流浪歌手

据美国的一份官方报告称，载人航天所取得的各项重大成就仍对当今世界格局和国际地位产生着极其重要的政治影响。在科技力方面，载人航天集当今世界航空航天的技术之大
成，如果没有高度发达的科学技术和科研能力，就不可能发展载人航天；在经济力方面，载人航天是世界上最昂贵的科学技术，需要国家大量的资金投入，如果一个国家没有雄厚的经济基础和强劲的经济能力就不可能发展载人航天；同时，载人航天还与防务力、社会力等密切相关。

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