Wind power has a significant cost advantage over nuclear power and has become
competitive with coal-fired power plants in many places. With new technological
advances and mass production, projected cost declines should make wind power one
of the world’s cheapest ways to produce electricity. In the long run,
electricity from large wind farms in remote areas might be used to make hydrogen
gas from water during periods when there is less than peak demand for
electricity. The hydrogen gas could then be fed into a storage system and used
to generate electricity when additional or backup power is needed.
Wind power is most economical in areas with steady winds. In areas where the
wind dies down, backup electricity from a utility company or from an energy
storage system becomes necessary. Backup power could also be provided by linking
wind farms with a solar cell, with conventional or pumped-storage hydropower, or
with efficient natural-gas-burning turbines. Some drawbacks to wind farms
include visual pollution and noise, although these can be overcome by improving
their design and locating them in isolated areas.
Based on the information in paragraph 3 and paragraph 4, what can be inferred
about the states of North Dakota, South Dakota, and Texas mentioned at the end
of paragraph 1?
A. They rely largely on coal-fired power plants.
B. They contain remote areas where the winds rarely die down.
C. Over 1 percent of the electricity in these states is produced by wind
D. Wind farms in these states are being expanded to meet the power needs of
the United States.
areas，C项选1 percent， D项选the United