20xx秋上海教育版英語六年級上冊module4unit10airperiod2ppt課件-文庫吧資料
2024-11-25 00:52本頁面
【正文】 It has no smell or taste. We cannot see it, but we can feel it. It is everywhere. It is important to all people. It is also important to animals and plants. We all need it to keep us alive. Look at the kite and the balloon. Look at the plane and the bird. They all need it too. It keeps them high in the sky. What is it? It is air. How to make a parachute? 1. The parachute falls down slowly. 2. The parachute is open. 3. The parachute hits the ground gently. 4. There is air in the parachute. The air is dirty in some places. We
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