Para. 1 Para. 2 Para. 3
Para. 4 Para. 5
The formation (形成) of the earth. The importance of water for life. A widely accepted theory about the formation of the universe. The arrival of humans and their impact on the earth. The development of plants and animals on the earth.
Unit 4
Astronomy: the science of the stars
Warming up
What are the names of the eight planets that circle our sun?
The sun
金星 Venus
火星 Mars
水星 Mercur
地球 Earth
Pangu separates the sky from the earth.
中国神话传说中有盘古开天地的说法。 巨人盘古用一把利斧劈开混沌, 将天地 分开。死后, 他的气息化成风和云, 声音 变成轰轰的雷声, 左眼化为太阳, 右眼化 为月亮, 手足与四肢变成大地的四极与 五方的名山, 血液化成江河,筋脉铺成道 路, 肌肉形成田地, 须发成为星星, 牙齿 和骨骼化为金属、珍珠、玉石, 汗水成 为滋润万物生长的甘霖和雨露。
2. Why did the plants grow before the animals came? Because plants provide oxygen for animals to breathe.