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楼主,关于肉和谷物的那题,我找到2个类似的题目,看看是不是他们的变体: 1. Escalating worldwide demand for corn has led to a sharp increase in the market price of corn, and corn prices are likely to remain high. Corn is extensive used as feed for livestock, and because profit margins are tight in the livestock business, many farmers are expected to leave the business. With fewer suppliers, meat prices will surely rise. Nonetheless, observers expect an immediate short-term decrease in meat prices.
Which of the following, if true, most helps to justify the observers’ expectation?
A. The increase in corn prices is due more to a decline in the supply of corn than to a growth in demand for it. B. Generally, farmers who are squeezed out of the livestock business send their livestock to market much earlier than they otherwise would. C. Some people who ate meat regularly in the past are converting to diets that include little or no meat. D. As meat prices rise, the number of livestock producers is likely to rise again. E. Livestock producers who stay in the business will start using feed other than corn more extensively than they did in the past. 2. 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 production 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 gain 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.
[此贴子已经被作者于2009/8/23 22:16:08编辑过] |