[求助]OG 202 B选项求助

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
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 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