人教版高中英语必修三unit4astronomythescienceofthestarsusinglanguage课件内容摘要：
our journey? Which change would be the most powerful? Li Yan Pin , an astronomer by spaceship Three times , the first time Careful reading Leaving for the moon Please read and underline the sentences about the gravity and our weight during the journey? Careful reading The change of gravity on the moon in space gravity very light disappearing strong on the earth Careful reading Walking on the moon Wha。阅读剩余 0%
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