1. Why can some animals know the weather changes?______
2. What do birds do before the storm?______
3. When should we be careful with the environment?______
4. What can crickets' chirps tell us?______
5. How should we treat animals in our daily life?______
Because they have stronger senses.
2. What do birds do before the storm?______
They fly low.
3. When should we be careful with the environment?______
When animals act strangely.
4. What can crickets' chirps tell us?______
The heat rises.
5. How should we treat animals in our daily life?______
We should care about them.
答案：1. Because they have stronger senses. 2. They fly low. 3. When animals act strangely. 4. The heat rises. 5. We should care about them.（答案不唯一）