新prep cr 102 快考了求指导！

懒猪笨笨1 · 发表于 2011-9-27 10:10:51

102.(29392-!-item-!-188;#058&004074)(GWD 1-Q15)

In parts of South America, vitamin-A deficiency is a serious health problem, especially among children.In one region, agriculturists hope to improve nutrition by encouraging farmers to plant a new variety of sweet potato called SPK004 that is rich in betacarotene, 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. There are other vegetables currently grown in the region that contain more beta-carotene than the currently cultivated varieties of sweet potato do.

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. For successful cultivation of SPK004, a soil significantly richer in nitrogen is needed than is needed for the varieties of sweet potato currently cultivated in the region.

D. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.

E. The currently cultivated varieties of sweet potato contain no important nutrients that SPK004 lacks.
正确答案是E 我选了D
我选D是因为D的意思跟题干最后“since sweet potato is a staple of the region’s diet and agriculture, and the varieties currently grown contain little beta-carotene.

”逗号后面的内容意思相同，并且如果把D去非的话会weaken题干；另外E说的是其他important nutrients我把它看作是与题目无关的内容了这样考虑哪里出了问题呢？
恳请各位NN伸出援助的小手啊，以前的帖子都只有一言两语还是弄不明白啊

since sweet potato is a staple of the region’s diet and agriculture, and the varieties currently grown contain little beta-carotene.

”逗号后面的内容意思相同，并且如果把D去非的话会weaken题干；另外E说的是其他important nutrients我把它看作是与题目无关的内容了这样考虑哪里出了问题呢？
恳请各位NN伸出援助的小手啊，以前的帖子都只有一言两语还是弄不明白啊

懒猪笨笨1 · 发表于 2011-9-27 15:51:00

嗷嗷，给位有力出力有思路出思路啊真心不懂啊啊啊啊

用户名已注册 · 发表于 2011-9-27 16:55:17

我也选了D 召唤各位大神解释。

懒猪笨笨1 · 发表于 2011-10-1 12:20:08

再顶一下各位帮帮忙解答一下啊

sunspirit2011 · 发表于 2011-10-1 16:25:17

原文相关逻辑链：SPK004富含b+土豆是主食-->plan成功

D. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.
D说没有其他品种的土豆比SPK004大大地富含b。原文的plan是“种SPK004”解决VA缺乏症，不管是否还有比SPK004更富含b的土豆，和“种SPK004”能否达到预期目的没有关系。所以我认为也是无关。

E. The currently cultivated varieties of sweet potato contain no important nutrients that SPK004 lacks.
E说现在种的土豆品种并不含有SPK004所缺乏的重要营养。如果说现在种的含有SPK004缺乏的重要营养，那如果改种SPK004，这些重要营养就没了，人们无法通过吃SPK004获得了。一种plan是否被采纳，一是能否达到目的，二是是否产生副作用（如果副作用过大，还不如不用）——这是个人总结的，做过一些题问为什么不采纳某某plan，正确答案往往是这个plan产生了不能接受的负面影响。

懒猪笨笨1 · 发表于 2011-10-2 14:54:32

谢谢ls！各位还有木有其他看法的呀呀呀呀呀

zzloveyibo · 发表于 2014-3-12 17:40:24

<div class="quote"><blockquote>我也曾经错过，现在是这样理解的：
原文相关逻辑链：SPK004富含b+土豆是主食-->plan成功
D. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.
D说没有其他品种的土豆比SPK004大大地富含b。原文的plan是“种SPK004”解决VA缺乏症，不管是否还有比SPK004更富含b的土豆，和“种SPK004”能否达到预期目的没有关系。所以我认为也是无关。
E. The currently cultivated varieties of sweet potato contain no important nutrients that SPK004 lacks.
E说现在种的土豆品种并不含有SPK004所缺乏的重要营养。如果说现在种的含有SPK004缺乏的重要营养，那如果改种SPK004，这些重要营养就没了，人们无法通过吃SPK004获得了。一种plan是否被采纳，一是能否达到目的，二是是否产生副作用（如果副作用过大，还不如不用）——这是个人总结的，做过一些题问为什么不采纳某某plan，正确答案往往是这个plan产生了不能接受的负面影响。

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终于懂了，不过这里E的解释要完善下，
E说现在种植的甜土豆也没有SPK004缺乏的营养物质，换句话说就是现在种植的土豆和SPK004都缺乏一些物质。这样就排除了现在种植的土豆含有比SPK没有的营养物质了。
再说明白点就是，SPK和现在种土豆含有的物质全部都一样，但是SPK比现在种的土豆多了很多的VA，所以support。

DeliciaAn · 发表于 2015-3-25 22:44:35

看到的GmatClub里一牛人分析的，我觉得说的很对：
D. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.

This is a particularly interesting one. We already can infer that the SPK004 sweet potato has more beta-carotene than the the traditional sweet potatoes in this region. That's the comparison that is meaningful in this argument. This answer choice provides the added information --- the SPK004 sweet potato also contains more beta-carotene than any other variety of sweet potato anywhere else --- China, Uganda, New Zealand, Alabama, etc. Well, that's interesting, but it's not particularly relevant. We already know the important comparison ---- the SPK004 sweet potato vs. sweet potatoes traditionally grown in these parts of South America. That's the part that is pertinent to the argument. The fact that the SPK004 sweet potato also contains more beta-carotene than any other variety of sweet potato in other places --- strictly speaking, this is irrelevant to the argument. Therefore, it is not a strengthener. This answer is incorrect.

Source: http://gmatclub.com/forum/in-parts-of-south-america-vitamin-a-deficiency-is-a-serious-137059.html

本贴相关题目 GMATPrep-2008E2-CR-102 (KIQD)

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新prep cr 102 快考了求指导！

我也曾经错过，现在是这样理解的：

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