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Câu hỏi:
According to the author, what is the impracticability of using coal, oil shale and coal tars' as sources of energy due to?
- A. They take a lot of time
- B. They are expensive
- C. They are non-renewable resources
- D. They are scarce resources
Lời giải tham khảo:
Đáp án đúng: B
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CÂU HỎI KHÁC
- What is the best title of the passage?
- What provided one third of the electricity in the United States fifty years ago?
- What could Rest replace the phrase geothermal power in the passage?
- Which of the following is not mentioned in the passage as an alternative source of energy?
- According to the author, what is the impracticability of using coal, oil shale and coal tars' as sources of energy due to?
- Although they are safe to use in the short term, coal, gas and oil present a long-term (7) ...... to the environment.
- All three types of fossil fuels produce carbon dioxide in
- (8) ...... greater .quantities than plants can use.
- The carbon dioxide then (9) ...... in the atmosphere
- and may even increase the earth's 'heat load' and lead to global (10) ..... in temperature.
- Furthermore, all three fossil 'fuels are (11) ...... forms of energy.
- Geothermal power is (12) ...... ever to be an energy source of major importance. It is limited and is exploitable in only a few places.
- Hydro-power offers a much more useful source of energy. It is also renewable but its (13) ...... is limited.
- In addition, large dams are also (14) ...... of causing changes in the world's climate.
- Wind power is a (15) ...... source of renewable energy
- but it cannot be used in many parts of the world where there is (16) ...... wind.
- Wave power is better source of energy in certain ways but it is clearly not practicable to build (17) ...... across every river estuary or to cover seas with expensive equipment.
- Solar power is renewable, it does not cause pollution and it does not add to the earth's heat (18) .......
- Unfortunately, solar power is not distributed equally, and in the northern latitudes it is difficult to (19) ...... and store. Solar power' also requires expensive equipment.
- Finally, nuclear power provides a very (20) ...... and renewable power source.
