Before fossil fuels were exploited and applied on a large scale, ( ) the main source of energy in ancient China.
Wood and charcoal
举一反三
- In the future, China's energy consumption will still be dominated by fossil energy, in which coal is the main energy.
- People are beginning to use clean energy sources mainly because _______. A: fossil fuels have caused a lot of pollution B: clean energy is cheap C: fossil fuels have cost a lot of lives D: they do not have enough fossil fuels now
- Fossil fuels like coal, oil and natural gas are non-renewable energy sources.
- U3T204. Almost 90 percent of the world's energy is supplied through the ______ of fossil fuels,
- We have to prepare for a new age of energy synthesis since fossil fuels will be eventually depleted.
内容
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Human beings have been depending heavily on fossil fuels to meet their increasing energy demands since the Industrial Revolution.
- 1
中国大学MOOC: We have to prepare for a new age of energy synthesis since fossil fuels will be eventually depleted.
- 2
The separation and combination of____ were characteristic of the way of thinking in ancient China.
- 3
The burning of fossil fuels results in the pollution of the______.
- 4
Wind power is an ancient source of energy __________ we may return in the near future.