曼哈顿逻辑题求解

vivian_hyy

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 gasolin, ethanol is easily renewable since it is primarily converted from the sun's energy. Moreover, compare 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 use 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 used.
E.   Whether the process of growing corn for fuel would result in as much pollution as does the production of conventional gasoline.

我选的c，答案是b。
我觉得c才是与评价文章无关的啊。即使ethanol 不像gasolin那么有效，也可以结合gasolin用来保证有效性啊。。。
为什么b不对呢？

有没有NN帮忙解答一下啊？

谢谢啦

vivian_hyy

有没有人啊？在线等着呢

vivian_hyy

没有人回我么