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标题: 请教一条费费里的逻辑题Some people say that the scarcity of food 。。。。 [打印本页]

作者: 实用工具01 时间: 2014-9-13 07:53
标题: 请教一条费费里的逻辑题Some people say that the scarcity of food 。。。。

. Somepeople say that the scarcity of food is a function of the finite limits of theearth’s resources, coupled with a relentless rate of population growth. Thisanalysis fails to recognize, however, that much of the world’s agriculturalresources are used to feed livestock instead of people. In the United States,for example, almost one-half of the agricultural acreage is devoted to cropsfed to livestock. A steer reduces twenty-one pounds of inexpensive grain to onepound of expensive meat. Thus, the scarcity of food is not merely a function oflimited resources and population growth.

Which one of the following is anassumption that would allow the conclusion in the argument to be properlydrawn?

A. People prefer eating meat toeating grain.

B. Meat is twenty-one times moreexpensive than grain.

C. The limits of the earth’sagricultural resources are not finite.

D. More than one-half of theagricultural acreage in the United States is devoted to drops fed to humans.

E. Growing crops for humanconsumption on the acreage currently devoted to crops for livestock will yieldmore food for more people.

E is the best answer. 喂养牲畜消耗的粮食为人们创造更多的食物。（题目内容是：有观点认为食物缺乏是因为土地资源有限而人口数量却不断增多。但作者认为该观点忽视了农产品中有相当大一部分是用来喂家畜的。在美国几乎有一半土地的粮食是为了养家畜。1磅肉要用去21磅廉价的谷物。因此，食物缺乏不仅是因为土地资源有限而人口数量却不断增多。）根据题目要求，我们只须反驳养家畜对粮食紧缺造成的影响。选项A中即使人们爱吃肉只会引起更多的粮食消耗，不能反驳作者; B并不能充分改变人们的取向；C强词夺理；D重复事实。

下面中文是解释，我不懂题目不是说要找assumption吗?为什么解释说要反驳作者。

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