🎧 Listen to today’s story
📚 Key Words
| Word | Meaning | 中文 |
|---|---|---|
| Scientist | A person who studies science to learn how things work. | 科学家 |
| Cell | The smallest part of a living thing. | 细胞 |
| Billion | A very large number (1,000,000,000). | 十亿 |
| Gene | Information in a body that tells it how to grow. | 基因 |
| Ocean | A very large area of salt water. | 海洋 |
| Planet | A large round object like Earth that moves around a star. | 行星 |
| Mystery | Something that is difficult to understand or explain. | 谜团 |
| Beginning | The first part of something. | 开始 |
📖 Read the story
Scientists are studying something very old called LUCA. LUCA is not a person or a pet. It is the name for the first living thing on Earth. It lived billions of years ago. Every plant and animal today comes from LUCA. LUCA was very small. it had only one cell. A cell is like a tiny part of a living thing. Scientists look at old rocks to learn more. They also study genes. Genes are like a book of information inside our bodies. Scientists think LUCA lived in very hot water. This water was deep in the ocean. Learning about LUCA helps us know how life began on our planet. It is like solving a very old mystery. Today, all people and animals are different, but we all started from the same place. Science helps us understand our history from the very beginning. It is very exciting!
✏️ Answer the questions
1. What is LUCA?
- A.A famous scientist
- B.The first living thing
- C.A pet animal
- D.A new planet
2. How many cells did LUCA have?
- A.Only one
- B.One hundred
- C.It had no cells
- D.Many thousands
3. Where did LUCA live according to scientists?
- A.On top of a mountain
- B.In a cold forest
- C.In hot ocean water
- D.On the moon
4. What are genes like?
- A.Small pieces of rock
- B.Books of information
- C.Very old trees
- D.Parts of the ocean
5. Why is it important to study LUCA?
- A.To find more gold
- B.To learn how to swim
- C.To understand how life started
- D.To build better houses