[请教]feifei-58

58. 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 drops fed to humans.

(E) Growing crops for human consumption on the acreage currently devoted to crops for livestock will yield more food for more people.

答案是E

觉的E不是Assumption, 是weeken了原文的结论

原文说：一些人认为食物的缺少是因为土地资源的有限和人口不断增长造成的。但是，作者认为，食物的缺少是因为有他因，即：一些土地用来喂养牲畜。

E是说：同样的亩数的土地，如果喂养牲畜，这些牲畜能提供更多的食物给更多的人吃。也就是，例如原来10亩地=养活10个人，现在10亩地=50斤牛肉=养活50个人。如果这样的话，土地的资源喂养了牲畜这件事情，在同样的土地资源下，应该给人类提供更多的食物阿。那么如果食物还是短缺，更说明了，是因为土地资源有限和人类增长速度太快了！

请大家指教，非常困惑！

to crazecat123

谢谢你哦，我又看了一下E的意思，确实如你所说，可是当时我就是绕不出来，海。。。。