狒狒逻辑58题求助！！！求NN！！！

baibaibaibai

58.Some people say that the scarcity of food is afunction of the finite limits of the earth’s resources, coupled with arelentless rate of population growth. This analysis fails to recognize,however, that much of the world’s agricultural resources are usedto feed livestock instead of people. In the United States, forexample, almost one-half of the agricultural acreage is devotedto crops fed to livestock. A steer reduces twenty-one pounds of inexpensivegrain to one pound of expensive meat. Thus, the scarcity of food is not merelya function of limited resources and population growth.

Which one of thefollowing is an assumption that would allow the conclusion in the argument tobe properly drawn?

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.

我选的是A，感觉答案不对啊啊，，因为是assumption，所以应该支持the scarcity of food 应该还由除了limited resources 和populaton growth 的原因导致的，，，，也就是文中提到的牲畜的消耗，，，而A项，人们更喜欢吃meat,不就支持了assumption么，说明牲畜消耗了很多粮食呀，，，求助求助，，感觉E很不对！！

nan_92

numbangel 发表于 2013-11-28 22:07
E选项应该是这个意思吧"Growing crops for humanconsumption will yield more food for more people"。我纠 ...

我也是。。在纠结很久后发现其实选项意思是 喂给牛吃的那部分crop产生出来的牛肉供养的人不如 crop直接给人吃供养的人 多。楼主，如果结论是说 食物短缺是喂给牛吃了 那你不觉得这逻辑上有问题吗 喂给牛吃的食物是为了吃牛肉啊 那食物怎么会短缺呢？所以这里必要的assumption就是crop转换成meat的这部分喂养的人却变少了 所以才造成了食物短缺 举个例子就是说 本来1crop可以变成1馒头喂养1人，可喂给牛吃后100crop变成1牛肉喂养1人，所以食物短缺了。A选项并不是must be true的 所以不对

numbangel

E选项应该是这个意思吧"Growing crops for humanconsumption will yield more food for more people"。我纠结半天这个题，最后发现是自己没正确理解E选项的意思。

soulwangh

baibaibaibai 发表于 2013-11-5 15:02
A不选懂了，，，可是选E还是不懂，是E选项我理解错了么。。不是用农作物来喂牲畜为更多地人提供了更多的 ...

Hi, You should pay attention to Reading and Comprehension.

This analysis fails to recognize,however, that much of the world’s agricultural resources are used to feed livestock instead of people.
This sentence means people waste agricultural resources by feeding them to livestock.
See“ instead of”，it shows the author‘s negative attitude toward feeding crops to livestock.
Also, The author’s attitude can extract from the context of the whole stimulus

baibaibaibai

soulwangh 发表于 2013-11-4 19:13
The conclusion of this argument is "Thus, the scarcity of food is not merely a function of limited  ...

A不选懂了，，，可是选E还是不懂，是E选项我理解错了么。。不是用农作物来喂牲畜为更多地人提供了更多的食物么？？
说明更多的人获得了食物呀，，怎么会scarce呢？

wwxavier

我同意楼上的解释，在这只是想补充一点， 楼主不要加工信息，不需要太过于较真每个选项的合理性。人们的喜欢吃什么和题目结论没有一点关系，至于楼主的解释是你自己想象出的合理解释，但文章中没有给出相关信息。 所以，我建议楼主逻辑题只是当做有关无关来做题。楼主可以用楼上的方法也就是取非选项，谁削弱谁是正确选项。

soulwangh

baibaibaibai 发表于 2013-11-4 16:25
求NN!!自己顶

The conclusion of this argument is "Thus, the scarcity of food is not merely a function of limited resources and population growth“.
Strengthen is not Assumption.
Assumption is an absolute requirement for the conclusion to be true. It cannot carry extra information.
It has no bearing on the conclusion whether people prefer eating meat or grain.
Thus, A is not an assumption.
A simple way is to negate the option to see whether it can weaken the conclusion. If the answer is yes, then it is the assumption.
For example, Growing crops for human consumption on the acreage currently devoted to crops for livestock will not yield more food for more people. Put this in to the stimulus, you will ask why bother the author to say so much garbage. Also, the conclusion is weaken by it.

baibaibaibai

求NN!!自己顶