FF上的一道题 帮忙啊啊啊

queenie0308

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.

选E

queenie0308

upup

rosyrosy00

这个我当时也做错了。我脑子里现在能想明白，但不能言简意赅地写出来。。。

queenie0308

o 那function 怎么理解啊

rosyrosy00

这个题目里基本可以理解为“资源有限和人口增长造成了食物短缺”。