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.
结论是,由于grain跟不上income的增长速度, 所以要进口。其实就是说,grain的消费是增长的, 但是如果象E所言,就如果消费减少,就不用进口了。 对于B,1)人口的多少与comsumption 的关系, 原文没有定义 2)问题的关键是抓住income increase. |