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Space junk: A growing problem
Space junk is a big problem around Earth. These are man-made objects left in space, like old satellites, broken rocket(火箭) parts, and even tiny chips(漆屑) of paint. There are more than 54,000 pieces of space junk bigger than 10 centimetres, and millions of smaller pieces too.
Space junk moves very fast—up to 28,000 kilometres per hour. Even a small piece can hurt a working satellite or the International Space Station. Space junk can also make it harder to send new spacecraft into space safely.
Scientists are trying to find answers. Some new satellites are made to reduce(减少) waste. Other ideas are to use nets or robots to catch space junk and bring it back to Earth.
If we don't do something, the junk will keep growing, and future space travel will become much more dangerous.
1. What is space junk?
2. How many big pieces of space junk (over 10 cm) are there?
3. How fast can space junk move?
4. Why can a small piece of space junk hurt a working satellite?
5. What ideas do scientists have to solve(解决) the problem?
Space junk: A growing problem
Space junk is a big problem around Earth. These are man-made objects left in space, like old satellites, broken rocket(火箭) parts, and even tiny chips(漆屑) of paint. There are more than 54,000 pieces of space junk bigger than 10 centimetres, and millions of smaller pieces too.
Space junk moves very fast—up to 28,000 kilometres per hour. Even a small piece can hurt a working satellite or the International Space Station. Space junk can also make it harder to send new spacecraft into space safely.
Scientists are trying to find answers. Some new satellites are made to reduce(减少) waste. Other ideas are to use nets or robots to catch space junk and bring it back to Earth.
If we don't do something, the junk will keep growing, and future space travel will become much more dangerous.
1. What is space junk?
Space junk is man-made objects left in space.
2. How many big pieces of space junk (over 10 cm) are there?
There are more than 54,000 pieces.
3. How fast can space junk move?
It can move at up to 28,000 kilometres per hour.
4. Why can a small piece of space junk hurt a working satellite?
Because space junk moves very fast.
5. What ideas do scientists have to solve(解决) the problem?
They want to use nets or robots to catch the junk and bring it back to Earth.
答案
1. Space junk is man-made objects left in space.
2. There are more than 54,000 pieces.
3. It can move at up to 28,000 kilometres per hour.
4. Because space junk moves very fast.
5. They want to use nets or robots to catch the junk and bring it back to Earth.
2. There are more than 54,000 pieces.
3. It can move at up to 28,000 kilometres per hour.
4. Because space junk moves very fast.
5. They want to use nets or robots to catch the junk and bring it back to Earth.
解析
【分析】
本题为英语阅读理解细节题，解题思路是先通读全文，明确每个问题的核心，再回到原文中定位对应信息，提取关键内容，用简洁准确的语言作答，确保答案与原文表述一致。
【解析】
1. 定位原文第一段第二句，可知太空垃圾是留在太空中的人造物体；
2. 定位原文第一段最后一句，提取超过10厘米的太空垃圾数量；
3. 定位原文第二段第一句，提取太空垃圾的移动速度；
4. 定位原文第二段第一句，明确小碎片能损坏工作卫星的原因是太空垃圾移动速度很快；
5. 定位原文第三段，提取科学家提出的解决太空垃圾问题的办法。
【答案】
1. Space junk is man-made objects left in space.
2. There are more than 54,000 pieces.
3. It can move at up to 28,000 kilometres per hour.
4. Because space junk moves very fast.
5. They want to use nets or robots to catch the junk and bring it back to Earth.
【知识点】
英语阅读理解细节题，信息提取
【点评】
本题考查英语阅读中细节信息的定位与提取能力，属于基础题型，只要认真阅读原文，准确找到对应内容即可作答，难度较低。
【难度系数】
0.8
本题为英语阅读理解细节题，解题思路是先通读全文，明确每个问题的核心，再回到原文中定位对应信息，提取关键内容，用简洁准确的语言作答，确保答案与原文表述一致。
【解析】
1. 定位原文第一段第二句，可知太空垃圾是留在太空中的人造物体；
2. 定位原文第一段最后一句，提取超过10厘米的太空垃圾数量；
3. 定位原文第二段第一句，提取太空垃圾的移动速度；
4. 定位原文第二段第一句，明确小碎片能损坏工作卫星的原因是太空垃圾移动速度很快；
5. 定位原文第三段，提取科学家提出的解决太空垃圾问题的办法。
【答案】
1. Space junk is man-made objects left in space.
2. There are more than 54,000 pieces.
3. It can move at up to 28,000 kilometres per hour.
4. Because space junk moves very fast.
5. They want to use nets or robots to catch the junk and bring it back to Earth.
【知识点】
英语阅读理解细节题，信息提取
【点评】
本题考查英语阅读中细节信息的定位与提取能力，属于基础题型，只要认真阅读原文，准确找到对应内容即可作答，难度较低。
【难度系数】
0.8
