扫描二维码，直接登录
题库 / Prep2012-CR-32
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?
No pronounced trend of decreasing per capita demand for rice is imminent in Teruvia.
Not all of the acreage in Teruvia currently planted with rice is well suited to the cultivation of rice.
None of the strains of rice grown in Teruvia are exceptionally high-yielding.
There are no populated regions in Teruvia in which the population will not increase.
There are no major crops other than rice for which domestic production and domestic demand are currently in balance in Teruvia.
assumption 问题，取反，若取反后一定导致事件不发生，那么就是对的选项。
a中，取反，平均每人需求降低，那么文中论述不成立，此选项也是最直接的
e中，取反，有除了rice之外的其他粮食作物来平衡需求，但是这仍然不能说文中的论述就一定不会发生，并没有说有了其他粮食，rice的需求就会下降。
登录 或 注册 后可以参加讨论