No living thing could survive at a vent except tube worms.

A．Cutting off subsidies on all fossil fuels.
B．Encouraging the use of clean energy sources.
C．Promoting the resurgence of nuclear power.
D．Adopting price reform to reduce emission.

A．nuclear power stations may become the targets of terrorist attack
B．Carbon dioxide is the principal source of greenhouse gas
C．The Bush administration doesn't give due weight to environment protection
D．Nuclear waste will turn to be an environmental threat in the long-run term