130. Over 75 percent of the energy produced in France derives from nuclear power, while in Germany it is just over 33 percent.
(A) while in Germany it is just over 33 percent
(B) compared to Germany, which uses just over 33 percent
(C) whereas nuclear power accounts for just over 33 percent of the energy produced in Germany
(D) whereas just over 33 percent of the energy comes from nuclear power in Germany
(E) compared with the energy from nuclear power in Germany, where it is just over 33 percent
A.Whileis somewhat ambiguous, since it might indicate simultaneity rather than contrast; the referent ofitis ambiguous, raising questions about just what two things are being compared.
2.举个例子，第二题中while的表示比较的用法：
134. Recently implemented “shift-work equations” based on studies of the human sleep cycle have reduced sickness, sleeping on the job,and fatigue among shift workers while raising production efficiency in various industries.(已经填入正确答案)
130. Over 75 percent of the energy produced in France derives from nuclear power, while in Germany it is just over 33 percent.
(A) while in Germany it is just over 33 percent
(B) compared to Germany, which uses just over 33 percent
(C) whereas nuclear power accounts for just over 33 percent of the energy produced in Germany
(D) whereas just over 33 percent of the energy comes from nuclear power in Germany
(E) compared with the energy from nuclear power in Germany, where it is just over 33 percent
A.Whileis somewhat ambiguous, since it might indicate simultaneity rather than contrast; the referent ofitis ambiguous, raising questions about just what two things are being compared.
2.举个例子，第二题中while的表示比较的用法：
134. Recently implemented “shift-work equations” based on studies of the human sleep cycle have reduced sickness, sleeping on the job, (and fatigue among shift workers while raising )production efficiency in various industries.(已经填入正确答案)
OG解释：the phrasewhile raisingprovides a clear contrast withhave reduced.作者: TerraceHo 时间: 2013-1-25 01:53
1. [from Stacey] http://www.beatthegmat.com/mba/2011/03/08/breaking-down-a-long-gmatprep-sc-problem "While" can actually mean two things: 1) while = at the same time as. I practice piano while twiddling my thumbs. (I’m very talented!) I practice piano at the same time as I twiddle my thumbs. 2) while = although, or some sort of contrast. While it’s true that I play piano and know how to twiddle my thumbs, I obviously can’t do both of those things at the same time. That would be impossible!"
2. 這個是從下面帖子找出來的~thank sisi~ http://forum.chasedream.com/GMAT_SC/thread-770110-1-1.html while, whereas, or although The use of "while" to show contrast is common and accepted in informal usage. In formal writing, however, "while" should be reserved to show that two or more events occur at the same time. In the following sentence, the two events are occurring simultaneously.
Measurements were taken while the specimen was rotating in the rig. For comparisons and contrasts, "whereas" and "although" should be used instead of "while."
Positions are logged manually, whereas temperatures and pressures are recorded automatically by the thin-film sensors. These two events happen in different ways. They do not necessarily occur at the same time.
Although positions are logged manually, temperatures and pressures are recorded automatically by the thin-film sensors. The meaning of this sentence is similar to the previous one, but it places more emphasis on the differences between the two events.
Indiscriminate use of "while" where "whereas" or "although" would be more appropriate can even result in ambiguity and misunderstanding: While my cat, Princess, eats quickly, she enjoys a leisurely stroll. Does she do both at the same time? Using "whereas" or "although" in this sentence would clear up the confusion.
hope that helps and open to discussion~~作者: lionsue 时间: 2013-1-25 15:21 谢谢熊猫啊，了解了~作者: doublena 时间: 2013-3-6 12:26
个人认为OG13-130的C选项优于A选项不完全取决于whereas和while的区别，而是C选项的whereas 后直接接nuclear power与题干中的energy构成平行比较，而A选项中的while后接in Germany破坏了比较结构。
不过这个帖子对whereas和while的比较归纳对我帮助很大！多谢！O(∩_∩)O作者: JackCai_WUDI 时间: 2016-8-24 15:10
那请问 D whereas just over 33 percentof the energy comes from nuclearpower in Germany为什么不选呢作者: 甜甜甜甜615 时间: 2016-8-28 22:39
因为D中的the energy指的就是前文中所说的the energy produced in France，而本意上来说，想表达的是在德国生产的energy，所以选择C,C 中的the energy后面有非谓语动词produced in germany来直接修饰，所以不会有D中的问题。作者: Raycyn 时间: 2017-8-28 12:46
我觉得A里的指代很有问题啊
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谢谢熊猫啊，了解了~