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新一轮中考复习备考周期正式开始， 一次航天飞行讲座(A Lecture on Space Flight) Last Saturday I attended a lecture on space flight. I am glad that I have learned a lot about space. Now I know something about the structure of a space rocket and understand the importance of space flight to mankind.I become interested in space. Yesterday I borrowed several books on space from the school library. I want to be a space scientist in the future. (责任编辑：admin) |