标题: GWD-3-21 [打印本页] 作者: Eileenl 时间: 2010-11-17 21:55 标题: GWD-3-21 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. C和E怎么不对了？作者: sdcar2010 时间: 2010-11-17 22:07
The answer is A.
For C, irrelevant. It's the total yields of rice that counts and the stimulus already says that the total yields of rice would not increase appreciably. If it is already stated, it is not an assumption.
For D, it just strengthens the original claim that the total population will increase. Since we already know this trend, it is not an assumption.作者: Eileenl 时间: 2010-11-17 22:10
那么A这个假设是怎么得来的呢？作者: sdcar2010 时间: 2010-11-17 22:22
If you negate A, then the argument will fall apart since the rate of decreasing demand might offset the rate of increasing population in terms of total demand for rice.作者: Eileenl 时间: 2010-11-17 22:31
If you negate A, then the argument will fall apart since the rate of decreasing demand might offset the rate of increasing population in terms of total demand for rice.
