On some of the oil-blessed lands, which energy resource is still scare?
举一反三
- Coal, oil and natural gas are __________ and __________. A: clean ... recyclable B: renewable resource ... unconventional energy C: non-renewable resource ... conventional energy
- People are aware that coal, which has gone to mass production, is still a finite resource, though _________ than either oil or gas.
- They still have some problems _____ in designing the energy vehicles.
- Which of the following is irreplaceable resource? A: solar energy B: petroleum C: wind power D: tidal energy
- In the future, China's energy consumption will still be dominated by fossil energy, in which coal is the main energy.