人教版高中英語必修三unit4astronomythescienceofthestarsreading課件-文庫吧資料
2024-11-26 14:08本頁面
【正文】 s )appear D B I G E H A C F J Stage 1: The development of the earth (1) After the Big Bang, what was the earth like? a cloud of dust a solid globe exploded with fire and rock produced water vapour and gases (2) What happened next? Water appeared (4) What appeared as the earth cooled down? water is important for the beginning of life on the earth. Why is water so important for the beginning of life? Because water allowed the earth to dissolve harmful gases and acids into oceans and seas. Stage2 The development of life small plants appears in water life developed after water appeared? Shellfish and all sorts of fish l
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