1. Read the sentences and underline the stressed words. Then practise saying them with a natural rhythm.

(Đọc các câu và gạch chân những từ được nhấn mạnh. Sau đó tập nói chúng với một nhịp điệu tự nhiên.)

1. Can farming affect the global temperature?

2. Some building materials are no longer allowed to be used.

3. Are you sure that these energy resources can be replaced naturally?

4. Coal is the dirtiest of all fossil fuels, but it’s still burnt to produce electricity.

5. We use flowing water to produce electricity for the village.

6. Do you think global warming is linked to rising sea levels?

7. I hope that renewable sources of energy will meet our needs.

8. There is an increase in certain greenhouse gases in the atmosphere.