June 2007 PrepTest, Section 2, Question 8
Proponents of the electric car maintain that when the technical problems associated with its battery design are solved, such cars will be widely used and, because they are emission-free, will result in an abatement of the environmental degradation caused by auto emissions. But unless we dam more rivers, the electricity to charge these batteries will come from nuclear or coal-fired power plants. Each of these three power sources produces considerable environmental damage. Thus, the electric car _______.
Proponents of the electric car maintain that when the technical problems associated with its battery design are solved, such cars will be widely used and, because they are emission-free, will result in an abatement of the environmental degradation caused by auto emissions. But unless we dam more rivers, the electricity to charge these batteries will come from nuclear or coal-fired power plants. Each of these three power sources produces considerable environmental damage. Thus, the electric car _______.
Proponents of the electric car maintain that when the technical problems associated with its battery design are solved, such cars will be widely used and, because they are emission-free, will result in an abatement of the environmental degradation caused by auto emissions. But unless we dam more rivers, the electricity to charge these batteries will come from nuclear or coal-fired power plants. Each of these three power sources produces considerable environmental damage. Thus, the electric car _______.
Proponents of the electric car maintain that when the technical problems associated with its battery design are solved, such cars will be widely used and, because they are emission-free, will result in an abatement of the environmental degradation caused by auto emissions. But unless we dam more rivers, the electricity to charge these batteries will come from nuclear or coal-fired power plants. Each of these three power sources produces considerable environmental damage. Thus, the electric car _______.
Which one of the following most logically completes the argument?
will have worse environmental consequences than its proponents may believe
will probably remain less popular than other types of cars
requires that purely technical problems be solved before it can succeed
will increase the total level of emissions rather than reduce it
will not produce a net reduction in environmental degradation
Explanations
Damn, so charging the batteries is the issue? And charging them under any of the three methods will produce considerable environmental damage? Then, we need to conclude that the electric car will still degrade the environment through its auto emissions.
Yeah, the proponents think it will “result in an abatement of the environmental degradation caused by auto emissions.” But the author says, “not so fast. Your battery charging will cause serious environmental damage!”
Popularity might not be affected by environmental harm caused.
It might succeed still with the environmental harms.
It might still be less than gas-guzzlers.
Same as D.
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