Some people say that the scarcity of food is a function of the finite limits of the earth’s resources, coupled with a relentless rate of population growth. This analysis fails to recognize, however, that much of the world’s agricultural resources are used to feed livestock instead of people. In the United States, for example, almost one-half of the agricultural acreage is devoted to crops fed to livestock. A steer reduces twenty-one pounds of inexpensive grain to one pound of expensive meat. Thus, the scarcity of food is not merely a function of limited resources and population growth.
Which one of the following is an assumption that would allow the conclusion in the argument to be properly drawn?
(A) People prefer eating meat to eating grain.
(B) Meat is twenty-one times more expensive than grain.
(C) The limits of the earth’s agricultural resources are not finite.
(D) More than one-half of the agricultural acreage in the United States is devoted to crops fed to humans.（E）
(E) Growing crops for human consumption on the acreage currently devoted to crops for livestock will yield more food for more people.作者: nobody910 时间: 2012-9-19 22:12
看我的推断
a说人们喜欢吃什么 无关
b肉的价格 无关
c说土地资源有点关系 先留下
D说种什么种什么 无关
E 说的是种植物的转成养牲口能产生更多的食物 这个无法判断
看原文原文说finite limits of the earth’s resources 是导致食物短缺
的原因 然后又 推倒 说面积都不够了还有许多地方用来养牲口 给出了一个
粮食和肉价的比例(这个是误导项) 不要主观推断 所以finite limits of
the earth’s resources不紧紧是食物短缺的一个原因. 问题是什么假设能让结论合理.
比较刚两个选项The limits of the earth’s agricultural resources are not finite.
Growing crops for human consumption on the acreage currently devoted to crops for livestock will yield more food for more
people.
c说的的是earth’s agricultural resources are not finite.文章说的是finite所以相反
剩下E 说的食物和养活人的关系 和文章有点关系 所以选这个
至于为什么对不考虑 在考试的时候你根本没时间想为什么对作者: francoiswang 时间: 2012-9-26 20:14
其实如果真的做题，1，2，3，4全无关，因为都没体现crop喂牛相关逻辑，直接选e
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