高中英語unit4astronomythescienceofthestarsreading2課件新人教版必修3-在線瀏覽
2025-01-21 07:58本頁面
【正文】 1 small plants in water shellfish and all sorts of fish insects reptiles amphibians mammals dinosaurs humans plants animals Green plants on land forests Lets review the evolution of life on the earth. 1. Big Bang 2. a cloud of dust 3. A solid globe 4. exploded with fire and rock 5. produce the water vapour, carbon dioxideatmosphere How did the earth e into being? 6. cooled down 7. water appeared 8. Dissolved harmful gases amp。acid We have only one earth!!! We are making the world better. We are making the world worse. A B Discussion developed new methods of growing food (1) Wh
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