For many people in the United States who are concerned about the cost of heating homes and businesses, wood has become an alternative energy source to coal, oil, and gas. Nevertheless, wood will never supply more than a modest fraction of our continuing energy needs. Which of the following , if true, does NOT support the claim made in the last sentence in the passage above?
a. There are many competing uses for a finite supply of wood, and supplies give the lumber and paper industries a higher priority than they give individual consumers.
b. Wood produces thick smoke in burning , and its extensive use in densely populated cities would violate federal antipollution guidelines.
c. There are relatively narrow limits to how far wood can be trucked before it becomes more economical to burn the gasoline used for transportation instead of the wood.
d. Most apartment dwellers do not have adequate storage space for the amount of wood necessary to supply energy for heating.
e. Most commercial users of energy are located within range of a wood supply, and two-third of United States homes are located out of the metropolitan areas.
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发表于 2003-9-24 00:17:00
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