🎧 Listen to today’s story
📚 Key Words
| Word | Meaning | 中文 |
|---|---|---|
| material | Something we use to make other things. | 材料 |
| tiny | Extremely small. | 极小的 |
| frame | The basic structure that supports something, like a building. | 框架 |
| trap | To catch and keep something in a place. | 收集/困住 |
| sponge | A soft object with many holes that can hold water. | 海绵 |
| pollution | Things that make the air, water, or land dirty and unsafe. | 污染 |
| desert | A very dry place with little water and few plants. | 沙漠 |
| prize | Something you win for doing something very well. | 奖/奖金 |
📖 Read the story
Scientists have made a new material called MOFs. These materials are very tiny. They are made of metal and carbon. To understand MOFs, think of a small house frame. The frame has a lot of empty space inside. MOFs are like this frame. Because they have empty spaces, they can trap different things. They act like smart, tiny sponges. Scientists can make MOFs in many shapes. Some MOFs can catch bad pollution from the air. This helps our planet stay clean. Other MOFs can carry medicine to the right place inside our bodies. They can even pull drinking water out of dry desert air! These amazing materials are very helpful. The scientists who made them won a big chemistry prize. One day, these tiny sponges will help us in many ways.
✏️ Answer the questions
1. What are MOFs made of?
- A.Only wood
- B.Metal and carbon
- C.Air and water
- D.Medicine and paper
2. Why can MOFs trap different things?
- A.Because they are very heavy.
- B.Because they have empty spaces.
- C.Because they are hot.
- D.Because they are made of glass.
3. How do MOFs help our planet?
- A.They can catch bad pollution from the air.
- B.They make the desert colder.
- C.They build small wooden houses.
- D.They stop the rain.
4. What can MOFs do inside our bodies?
- A.Make us feel tired.
- B.Change into water.
- C.Carry medicine to the right place.
- D.Help us run faster.
5. Why did the scientists win a big prize?
- A.Because they found a new desert.
- B.Because they built a big house.
- C.Because they made these helpful materials.
- D.Because they cleaned the whole ocean.