（精练）第10讲 八下 Modules 1～3-【优+学案·赢在中考】2024年中考英语总复习课件（潍坊专用）

英 语 第一部分　教材复习训练 第10讲　八下 Modules 1～3 一、阅读理解 [人与社会·太空探索] （2023·常州中考）Sending astronauts to Mars is a big challenge.Astronauts will have to take everything they need，including food，air and water.The room inside the spaceship is too limited to hold many things.So packing a spaceship is a huge challenge for a trip to Mars. Six astronauts on an eight-month trip to Mars will need at least 18，000 kilograms of water for drinking and washing.They’ll also need water to protect themselves from space rays which can pass right through spaceship walls and harm astronauts’ living cells.But a layer of water placed around the ship can stop the harm. That’s a lot of water.And sending water into space is too expensive.It costs $33， 000 to send one cup of water to Mars.The more you take，the more it costs.We have the technology to get to Mars，but the problem is that it’s too expensive. But Flynn，an engineer at NASA，thinks he has a way of solving the problem.Instead of building a heavy spaceship and packing it full of stuff（物料）， why not use the stuff as part of the spaceship？ Imagine a spaceship that blows up like a balloon.Inside，the walls have pockets like a big honeycomb（蜂巢）.These hold lots of plastic bags filled with water，dried food and algae（水藻）.All these make hard walls and great radiation（辐射） protection.And stopping radiation doesn’t influence the food or water itself—it’s safe to eat and drink.And what if the same water could be reused again and again？Flynn and his team call their packed-pocket idea Water Walls. Making oxygen and taking away CO2—the waste gas you breathe out—is another problem in space.“Water Walls will take away CO2 the same way it’s done here on our Earth—with living plants，” Flynn says.Living plants take in CO2 to make their food，and give off oxygen.“Plants are hard to grow in a spacecraft，so we use algae，” he says. Algae are tiny plants that live in water.The algae will live in bags in the walls too，fed by human waste and sunlight，eating up