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It was Sunday yesterday. Amy and Tom didn't go to school. They went to the museum. They saw many photos of planets(行星) there. They were excited. The photos were very beautiful. Then they saw a photo of an astronaut(宇航员). Amy and Tom didn't know the first man to the moon. But they knew China's first taikonaut in space. He is Yang Liwei. He spent about twenty-one hours in space.