9% of the world's electricity supply is provided by hydroelectric power.
举一反三
- Electricity generated from hydroelectric dams and wind power is more _______ than fossil fuel generated power.
- Until only recently did hydroelectric power was universally considered as an environmentally safe and clean means of electricity generator.
- Hydroelectric power plants generate in a much cleaner way than coal-fired ones. A: electric B: electricity C: electronic D: economic
- We can transmute (转换、转化) water power into __________ power. A: electricity B: electrical C: electronic （电子的） D: electronics
- The phrase “power cuts" in the second paragraph means ( ) A: the failure to give orders B: the stop of the supply of electricity C: the increase in the use of electricity D: the cut in the number of visitors