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1. The popular notion that a tree’s age can be determined by counting the number of internal rings in its trunk is generally true. However, to help regulate the internal temperature of the tree, the outermost layers of wood of the Brazilian ash often peel away when the temperature exceeds 95 degrees Fahrenheit, leaving the tree with fewer rings than it would otherwise have. So only if the temperature in the Brazilian ash’s environment never exceeds 95 degrees Fahrenheit will its rings be a reliable measure of the tree’s age. Which of the following is an assumption on which the argument above depends? A The growth of new rings in a tree is not a function of levels of precipitation. B Only the Brazilian ash loses rings because of excessive heat. C Only one day of temperatures above 95 degrees Fahrenheit is needed to cause the Brazilian ash to lose a ring. D The internal rings of all trees are of uniform thickness. E The number of rings that will be lost when the temperature exceeds 95 degrees Fahrenheit is not predictable.
2. The Department of Homeland Security has proposed new federal requirements for driver’s licenses that would allow them to be used as part of a national identification system. Using licenses for purposes not directly related to operating a motor vehicle is un-American because it would require U.S. citizens to carry the equivalent of “papers.” Such a requirement would allow the government to restrict their movements and activities in the manner of totalitarian regimes. In time, this could make other limits on freedom acceptable. The author assumes which of the following? A The next presidential election will be dishonest, as has happened in eastern European countries. B The government will soon start curtailing the activities of those it considers “dissidents.” C Blanket restrictions on law-abiding individuals are contrary to the traditions of American culture and law. D The majority of Americans are not willing to give up their right to travel and move about without identification. E Americans should resist all government regulation of their lives.
参考答案： EC
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发表于 2021-6-9 10:04:43
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