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The reading passage and the lecture both talk about whether ethanol fuel is a good replacement for gasoline. The reading argues that ethanol fuel fails to be a better alternative over gasoline, but the speaker holds the opposite and illustrates three points to side with his idea.
First, the reading passage indicates that the ethanol fuel may not help to solve the global warming mainly brought about by burning gasoline for the reason that burning ethanol also releases carbon dioxide into the atmosphere. Conversely, the professor contends that by using ethanol fuel rather than gasoline, the amount of carbon dioxide will be reduced because ethanol is made from plants like corn, which can remove carbon dioxide from the air as part of its nutrition. The growing process counteracts the release of carbon dioxide In a word, the professor does not go along with the idea made in the reading.
Second, the reading claims that a large number of plants will be consumed in making large amount of ethanol. Accordingly, animals will lose a substantial source of feed. This point is completely argued against by the lecturer who asserts that ethanol can be produced from parts of plant, namely cellulose, which is not edible to animals. Therefore, it is available for ethanol producers to make use of corn without utilizing foods for animals. Evidently, the second point of the reading material is refuted by the speaker’s idea based on the details mentioned above.
Finally, the professor suggests that it’s true that subsidies from government make the price of Ethanol cheaper, but this support will not be needed. The speaker figures out that once more customers start purchasing ethanol, the ethanol producers will increase their production, making the ethanol product cheaper and easily affordable. To better illustrate his stand, the professor cites a study anticipating that if the amount of ethanol product goes up to two times bigger than the current level, the average cost of this alternative fuel will decrease 40% of the original price per unit of product. Obviously, all the argument discussed above contradicts the point of the reading passage that the price of ethanol fuel will confront a surge once the government ceases the help of tax subsidies.