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6. source of energy is the source that can’t be replaced after use.
A. Effective B. Non-renewable C. Renewable D. Natural
7. Which of the following is NOT renewable source of energy?
A. wind B. coal C. hydro D. solar
8. We are looking for cheap, clean and sources of energy.
A. serious B. dangerous C. effective D. efficient
9. By the middle of the 21st century, people in developing countries more renewable energy.
A. used B. have used C. uses D. will be using
10. If we go on electricity, we will have to pay a lot next month.
A. turning on B. widened C. wasting D. increasing
11. Biogas is and cheap for cooking and heating.
A. serious B. expensive C. plenty D. abundant
12. We should put on our roof for the heating and hot water.
A. equipment B. cracks C. solar energy D. solar panels
13. In many countries, people think that electricity, gas and water are not luxuries but .
A. necessities B. appliances C. sales D. consumers
14. We should use light bulbs in our homes.
A. a bit energy B. efficient C. low energy D. little energy
15. A hydropower station in the North of the country next year.
A. will be built B. has been built C. was built D. were builtviết câu r chọn đáp án đúg nha