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单选题
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.
参考答案
参考解析
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.
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.
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estimated (估计) to have been about five million. Today it is estimated that some
260 million people speak it as a native language, mainly in the United States,
Canada, Great Britain, Ireland, South Africa, Australia and New Zealand. In
addition to the standard varieties of English found in these areas, there are a
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English in addition to their own languages. The purpose for English learning and
the situations in which such learning takes place are so varied that it is
difficult to explain and still more difficult to judge what forms an adequate
working knowledge for each situation. The main reason
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fields are being produced, and not always by native speakers. It is widely used
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