求问Manhattan CR上的一道题

润之

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 the 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

之前看了零星的解释，但没有一个特别persuasive的，想问问B选项那句话的翻译？
Thx！

yakev6

http://forum.chasedream.com/GMAT_CR/thread-725271-1-1.html

yakev6

for B, MORE is not appropriate for me , in that the stimulus have already said: "pure ethanol is a cleaner-burning fuel"

Please talke below question as analogy.
In parts of South America, vitamin-A deficiency is a serious health problem, especially among children. In one region, agriculturists are attempting to improve nutrition by encouraging farmers to plant a new variety of sweet potato called SPK004 that is rich in beta-carotene, which the body converts into vitamin A. The plan has good chances of success, since sweet potato is a staple of the region’s diet and agriculture, and the varieties currently grown contain little beta-carotene.
Which of the following, if true, most strongly supports the prediction that the plan will succeed?
(A) The growing conditions required by the varieties of sweet potato currently cultivated in the region are
conditions in which SPK004 can flourish.
(B) The flesh of SPK004 differs from that of the currently cultivated sweet potatoes in color and texture, so
traditional foods would look somewhat different when prepared from SPK004.
(C) There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.
(D) The varieties of sweet potato currently cultivated in the region contain some important nutrients that are
lacking in SPK004.
(E) There are other vegetables currently grown in the region that contain more beta-carotene than the
currently cultivated varieties of sweet potato do.

In E, The fact whether there are more beta-carotene vegetables does no has any effect to the success posibility of current plan.