A．global warming.
B．too abstract to understand.
C．as forceful as fate.
D．an epistemological problem.

A．strongly supported
B．only temporarily adopted
C．considered as ineffective
D．not regarded as new ideas

A．reserves of water in reservoirs have been diminishing.
B．water levels this year are at record lows.
C．farmers can't do without water for economic survival.
D．the government imposed restrictions on water use.