Read the statements. Then listen to a talk about global warming and check ideas that are part of the talk.
选项：

A:Our use of fossil fuels has increased.
B:A very much higher average temperature leads to climate change and changes to the weather.
C:Climate change is being driven by both natural and human-made forces.
D:New reserves of fossil fuels will be hard to find.
E:We can personally try to conserve energy.