请问一道逻辑题

laahaaUID：3566972

Ethanol, a fuel derived from corn, can be used alone to power cars or
along with gasoline to reduce the amount of gas consumed. Unlike
gasoline, ethanol is easily renewable since it is primarily converted
from the sun's energy. Moreover, compared with conventional
gasoline, pure ethanol is a cleaner-burning fuel. To save energy and
reduce pollution, many individuals advocate the increased usage of
ethanol as a primary fuel source in conjunction with or in place of
gasoline.
In evaluating the recommendation to increase the use of ethanol, it
would be important to research all of the following EXCEPT:
(A) Whether the energy required to grow and process corn used as fuel is
greater than the amount of energy ultimately produced
(B) Whether more energy is saved when using ethanol in conjunction with
or in place of gasoline
(C) Whether ethanol is as efficient a fuel as gasoline
(D) Whether it is possible to produce more ethanol than is currently
produced
(E) Whether the process of growing corn for fuel would result in as much
pollution as does the production of conventional gasoline







答案B
可是，如果把B选项理解为：”单用Ethanol或者Ethanol与gasoline混合用是否可以更省能源？“ 那么我们可以推出两个面：
1 更省能源
2 更费能源

为什么答案中两个面是说单用还是混用Ethanol会节省能源，而不是说更节省或者更耗费？并且，如果是考虑更节省或者耗费的话，也符合原文中“To save energy and reduce pollution, many individuals advocate the increased usage of ethanol as a primary fuel source in conjunction with or in place of gasoline.” 那些人说的本来就是单用与混用啊   不解




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附解释 图片的 可能有点看不清 可是复制粘贴似乎完全乱掉 下载或者单击看大图即可清晰

wsjenglishUID：3643341

怎么可能是b呢 出处是哪里？

laahaaUID：3566972

wsjenglish 发表于 2015-8-11 13:50
怎么可能是b呢 出处是哪里？

曼哈顿gmat逻辑题的书  我的原帖已添加解释

wsjenglishUID：3643341

出题的人神经错乱了。。。。

乔爷UID：3497418

但是答案到底是什么呢？看了半天觉得有可能是D，因为原文中根本没提到产量的事。

laahaaUID：3566972

乔爷 发表于 2015-8-14 08:39
但是答案到底是什么呢？看了半天觉得有可能是D，因为原文中根本没提到产量的事。

答案B 上面有解释

brooksideUID：3627142

这题好难啊
我估计只能在答案知道之后才能按答案想清楚（排除法），如果自己做的话，肯定挂。
马哈顿的题都这个样子？

gterlannUID：3595027

这题好像前几天有人问过，难道就是这个同一个帖子么。这题选B我认为是这个观点在文中已经讨论过的一个implicit premise thus do not need further fathom；这个题目比较怪的，另外四个选项其实全都要用到realworld knowledge，感觉这种类型的题目不像ETS的风格。Manhattan题目就是这样的，很难，难但是让你没话说，但是剑走偏锋，magoosh对Manhattan的V题目的评价很低。

不过我还是挺喜欢Manhattan的题目的，他们的题目解释都比较翔实而且生动，重复看感觉提升很大，但实际他们命题确实有点过分追求难度而不是去模仿ETS，他们的GRE RC GUIDE上面的好几篇长文章直接拖的LSAT PT的原文就拿来用了。