Q21:
In Teruvia, the quantity of rice produced per year is currently just large enough to satisfy domestic demand. Teruvia¡¯s total rice acreage will not be expanded in the foreseeable future, nor will rice yields per acre increase appreciably. Teruvia¡¯s population, however, will be increasing significantly for years to come. Clearly, therefore, Teruvia will soon have to begin importing rice.
Which of the following is an assumption on which the argument depends?
A:No pronounced trend of decreasing per capita demand for rice is imminent in Teruvia.
B:Not all of the acreage in Teruvia currently planted with rice is well suited to the cultivation of rice.
C:None of the strains of rice grown in Teruvia are exceptionally high-yielding.
D:There are no populated regions in Teruvia in which the population will not increase.
E:There are no major crops other than rice for which domestic production and domestic demand are currently in balance in Teruvia.
Correct answer is A, why? my answer is E
The whole argument is talking about rice
E is beside the point I think.
No matter what crops are there in T, it doesn't impact on the consumption of rice.
E如果改为“没有其它农作物是供大于求的”而不是balanced的,那么E是对的
rice的供应量(总亩数×每亩产量)=Rice的需求量(人口×每人的需求量),在总亩数和每亩产量不增加的情况下,人口增加,只要每人需求量下降才行。
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