People are beginning to use clean energy sources mainly because _______.
举一反三
- 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
- More and more people ____ the new energy because it is clean and cheap.
- More and more people ____ the new energy because it is clean and cheap. A: turn to B: turn down C: turn off D: turn on
- Why bioenergy is clean energy ?Because there is no （ ）during combustion.
- The essence of low-carbon economy is the issue of efficient use of energy, clean energy development, and pursuit of green GDP.