We 1 …………use………... energy for three main things: electricity production, heating and transport. For the first two, we 2 ………have…….. options such as solar and wind power, or natural gas. But oil is still the world`s number one source of energy, and for transport at least, there is currently no alternative. In China, domestic energy consumption 3 ……… is going up………… year by year and demand in similar regions 4 ……is catching up…….. fast. We 5 …know………….how to use energy more efficiently now than in the past but the worldwide rise in demand 6 …is causing……………. concern amongst experts. Some experts 7 ……think……… that oil supplies will start to fall within the next twenty years. Most experts 8 …………agree………. That we need to find a new source of energy soon.
