B
KEY→P3
范畴:人与自然 主题:宇宙探秘 体裁:说明文 难度:★★★★ 建议用时:8分钟 评价:/4
Have you ever dreamed of traveling in space? For many kids, staring at the stars leads to daydreams about what it would be like to be an astronaut. Just think about how amazing it would be to set foot on the moon or another planet!
Although it sounds like it would be great fun to travel to outer space, it would be a lot of work, too. Traveling to outer space needs lots of preparation.
Once you are in space, nothing can board the ship and nothing can go out. You must take all you need into outer space to keep yourself alive. Let’s call these things “inputs”, including food, water and oxygen. Every input creates an output. If you open a box of cookies for breakfast, what will you do with the box when it’s empty? Every piece of rubbish you create in space will remain on the ship with you. Your body will also output waste. Since nothing can leave the spaceship, you will have to think of another way to deal with bodily waste.
Even breathing creates an output—carbon dioxide(二氧化碳)! It’s true that plants depend on carbon dioxide in the same way humans depend on oxygen to breathe. However, plants have other input needs. If you take a banana tree with you, you will need to bring enough water to keep it alive. You must also consider another type of output rubbish in the ship after taking the fruit as snacks—the banana peel.
See how carefully you have to plan for a trip to outer space? How can you plan your actions on earth to have the least influence on the environment and your future? Not only do you have to think about all the things you’ll need, you will also have to consider the influence of those things because of the waste they may create.
()1. What can we learn from the first two paragraphs?
A. It’s challenging to travel in space.
B. It’s boring to live on the moon.
C. It’s relaxing to stare at the stars.
D. It’s difficult to study other planets.
()2. What do we know about the input in space?
A. It will make astronauts sleepy.
B. It only means things to eat and drink.
C. It is quite important to astronauts.
D. It can help astronauts deal with rubbish.
()3. What does the 4th paragraph mainly talk about?
A. The reason why breathing creates an output.
B. A way to plant a banana tree in space successfully.
C. The reason why plants depend on carbon dioxide.
D. A way to deal with carbon dioxide in the spaceship.
()4. What can be the best title for the passage?
A. How to prepare for a trip to outer space
B. How to deal with waste in the spaceship
C. Differences between inputs and outputs
D. Different ways to deal with waste in space
英语嗨吧

文章主要讲述了如何为外太空之旅做准备。
1. A 细节理解题。根据“Traveling to outer space needs lots of preparation.”可知，太空旅行具有挑战性。
2. C 推理判断题。根据“You must take all you need into outer space to keep yourself alive. Let's call these things 'inputs', including food, water and oxygen.”可知，在太空“输入”对宇航员来说很重要。
3. D 段落大意题。通读第四段可知，本段主要说明了在宇宙飞船中植物作为处理二氧化碳的一种潜在方式。
4. A 标题概括题。本文主要讲述了如何为外太空之旅做准备，故A项是本文的最佳标题。