The market for ethanol fuel in the United States ______.
A、is known to very few people.
B、limited due to technological problems.
C、may expand many times its present size with technological advancement.
D、is run by the National Ethanol Vehicle Coalition.
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试题解析
录音中指出maze-based E85 fuel也即是an 85% ethanol/petrol mixture,在提到目前E85的市场后,录音中指出“Better fermentation techniques, based on biotechnology, may multiply that many times”,可见以生物科技为基础的更好的发酵技术会促使乙醇燃料市场的扩大。
【录音原文】
Maze-based E85 fuel (an 85% ethanol/petrol mixture) is already on sale in parts of America. In July, the National Ethanol Vehicle Coalition launched a project to promote greater use of E85 in Wisconsin, Missouri, Colorado, Minnesota, Michigan and Illinois. The coalition estimates that the market for E85 is now about 40m liters a year. Better fermentation techniques, based on biotechnology, may multiply that many times.