Twenty percent of all energy consumed in the United States is consumed by home appliances. If appliances that are twice as energy-efficient as those currently available are produced, this figure will eventually be reduced to about ten percent.
The argument above requires which of the following assumption?
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AHome-appliance usage would not increase along with the energy efficiency of the appliances.
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BIt wouldn't be expensive to produce home appliances that are energy-efficient.
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CHome-appliance manufacturers now have the technology to produce appliances that are twice as energy-efficient as those currently available.
分析该选项
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DThe cost of energy to the consumer world rise with increase in the energy efficiency of home appliances.
分析该选项
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EThe percentage of energy consumed by home appliances will increase if existing appliances are not replaced by more energy-efficient models.
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正确答案: A