🎧 Listen to today’s story
📚 Key Words
| Word | Meaning | 中文 |
|---|---|---|
| seagrass | Green plants that grow under the water in the ocean. | 海草 |
| gas | A substance like air that you cannot always see. | 气体 |
| useful | Something that helps you do what you want. | 有用的 |
| float | To stay on the surface of the water and not sink. | 漂浮 |
| sink | To go down under the surface of the water. | 下沉 |
| muscle | A part of the body that helps you move or be strong. | 肌肉 |
| bottom | The lowest part of something, like the ocean floor. | 底部 |
| tool | Something that helps you complete a task or job. | 工具 |
📖 Read the story
Welcome to Little Science Daily! Today we learn about Florida manatees. These big animals live in the water. They eat lots of seagrass every day. This food makes gas inside their bodies. The gas is very useful for them. It works like a small balloon. It helps the manatees stay at the top of the water. This is called floating. But what happens when they want to go down deep? The manatee uses its strong muscles to push the gas out. This makes the manatee heavier. Then, it can sink to the bottom of the sea. For manatees, this gas is not just a funny smell or a loud sound. It is a special tool. It helps them move up and down easily in the ocean. Would you like a body that works like a balloon? It is a smart way to swim!
✏️ Answer the questions
1. What do manatees eat every day?
- A.Small fish
- B.Seagrass
- C.Fruit
- D.Meat
2. The gas inside a manatee’s body is like a…
- A.balloon.
- B.boat.
- C.car.
- D.house.
3. What does the gas help the manatee do?
- A.Run fast
- B.Sleep better
- C.Stay at the top of the water
- D.Find other manatees
4. How does a manatee go to the bottom of the sea?
- A.It eats more food.
- B.It pushes the gas out.
- C.It calls its friends.
- D.It swims to the beach.
5. According to the text, the gas is a…
- A.problem.
- B.bad smell only.
- C.special tool.
- D.scary thing.