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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.

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