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标题: 多指点:og-202 [打印本页]

作者: bfghdggf    时间: 2004-11-20 18:28     标题: 多指点:og-202

202. Gortland has long been narrowly self-sufficient in both grain and meat. However, as per capita income in Gortland has risen toward the world average, per capita consumption of meat has also risen toward the world average, and it takes several pounds of grain to produce one pound of meat. Therefore, since per capita income continues to rise, whereas domestic grain prod uction will not increase, Gortland will soon have to import either grain or meat or both. Which of the following is an assumption on which the argument depends? (A) The total acreage devoted to grain production in Gortland will not decrease substantially. (B) The population of Gortland has remained relatively constant during the country’s years of growing prosperity. (C) The per capita consumption of meat in Gortland is roughly the same across all income levels. (D) In Gortland, neither meat nor grain is subject to government price controls. (E) People in Gortland who increase their consumption of meat will not radically decrease their consumption of grain. key:e,但是我觉得b也对呀,如果人口减少,那么grain的消耗也会减少,那就不一定要进口grain啦?其实b和e影响的对象都是一样的:grain,可为什么b不对呢?


作者: jojofgasw    时间: 2004-11-20 18:37

注意C是支持, 不是假设. C取非可能人数增加, 那么支持结论. 可能人数减少, 削弱结论.
如果改为remain or increase...或not decrease, 我认为是假设




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