20xx春牛津译林版英语九下unit4lifeonmarswelcometotheunit内容摘要：
it look like? It looks red. So it is also called the Red Pla. So many people / crowded Too much air pollution Terrible traffic What shall we do Where shall we live Fly to the Mars 火星的表面与地球最相似，它有一层稀薄的大气，地表也有极地冰盖和河流冲刷出来的山谷。 How to fly to the Mars? spaceship/spacecraft What do we need or have? robot helmet Can you say something about what the life will be like on Mars? In。阅读剩余 0%
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