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1. You each need to bring ________（帐篷）when you go camping tomorrow.
答案
tents
2. — There is less ________（重力）on the Moon than on the Earth, right? — Exactly.
答案
gravity
3. It is said that there is no life on ________（火星）at the moment.
答案
Mars
4. Not wearing a ________（头盔）while riding a motorbike is dangerous.
答案
helmet
5. Be sure to bring a p______ pack when travelling to ensure your electronic devices(电子设备）stay charged.
答案
power
6. I think the a______ tank is the most important thing for an astronaut.
答案
air
7. — What did you eat during the trip in the mountain?
— There was no fresh food，so we had to eat d______ food.
— There was no fresh food，so we had to eat d______ food.
答案
dried
8.（2023·苏州模拟改编）We need to take our s______ bag if we want to go camping outside during the night.
答案
sleeping
1. — How will you walk on Mars? — I need __________ special boots.
答案
to wear
2. Many young ladies like to wear fur clothes __________ warm in winter.
答案
to keep
3. He __________ the problem for a long time before coming up with a solution.
答案
thought about
4. It’s __________ to play this kind of computer game，I think.
答案
boring
5. — How do you like the exam? — It is not as difficult as we __________ before.
答案
expected
My uncle James is a famous 1. ________（science）. He likes to make lots of predictions 2. ________ the future. He says that in 100 years some things will be 3. ________（good）than now. For example，we will not have to wash the 4. ________（dish）or sweep the floor because we’ll all have robots in our homes. Also，we won’t need to use paper money. We’ll all use credit cards(信用卡）to buy things. We’ll have more free time，and travelling will be 5. ________（cheap）than it is now. Maybe some people will spend their vacations 6. ________ space trips. 7. ________，Uncle James says that some things will get worse in the next century. If more people use cars，the air will be more 8. ________（pollute）. Also，if there are fewer trees，the air will become dirtier. If pollution gets 9. ________（real）bad，maybe people will have to go and live on Mars. Uncle James says we’ll be very sorry if pollution becomes 10. ________（bad).
答案
1. scientist 2. about 3. better 4. dishes 5. cheaper 6. on 7. However 8. polluted 9. really 10. worse
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(层）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 about 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(物品），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(海藻）. 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 or 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 CO₂ and making oxygen for the astronauts to breathe.
Flynn thinks his onboard recycling system has many advantages. He hopes it will help make flying to Mars a reality soon.
1. What does the phrase “packing a spaceship” in Paragraph 1 most probably mean?
A. Repairing things in a spaceship. B. Recycling things in a spaceship.
C. Checking things in a spaceship. D. Putting things into a spaceship.
2. What is the advantage of Flynn’s system?
A. Cost is saved. B. Travelling time is saved.
C. Plastic bags are saved. D. Food is saved.
3. What is one purpose of Flynn’s idea of Water Walls?
A. To produce water in the spaceship. B. To make the whole spaceship stronger.
C. To control the temperature in the spaceship. D. To prevent space rays during the space trip.
4. Why are algae put in the plastic bags?
A. To prevent water from being polluted. B. To serve as food for astronauts.
C. To provide oxygen for astronauts. D. To help other plants grow in a spaceship.
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(层）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 about 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(物品），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(海藻）. 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 or 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 CO₂ and making oxygen for the astronauts to breathe.
Flynn thinks his onboard recycling system has many advantages. He hopes it will help make flying to Mars a reality soon.
1. What does the phrase “packing a spaceship” in Paragraph 1 most probably mean?
A. Repairing things in a spaceship. B. Recycling things in a spaceship.
C. Checking things in a spaceship. D. Putting things into a spaceship.
2. What is the advantage of Flynn’s system?
A. Cost is saved. B. Travelling time is saved.
C. Plastic bags are saved. D. Food is saved.
3. What is one purpose of Flynn’s idea of Water Walls?
A. To produce water in the spaceship. B. To make the whole spaceship stronger.
C. To control the temperature in the spaceship. D. To prevent space rays during the space trip.
4. Why are algae put in the plastic bags?
A. To prevent water from being polluted. B. To serve as food for astronauts.
C. To provide oxygen for astronauts. D. To help other plants grow in a spaceship.
答案
1~4. DADC
