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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.
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.
The spacing of the four holes on a fragment of a bone flute excavated at a Neanderthal campsite is just what is required to play the third through sixth notes of the diatonic scale—the seven-note musical scale used in much of Western music since the Renaissance. Musicologists therefore hypothesize that the diatonic musical scale was developed and used thousands of years before it was adopted by Western musicians. Which of the following, if true, most strongly supports the hypothesis? A. Bone flutes were probably the only musical instrument made by Neanderthals. B. No musical instrument that is known to have used a diatomic scale is of an earlier date than the flute found at the Neanderthal campsite. C. The flute was made from a cave-bear bone and the campsite at which the flute fragment was excavated was in a cave that also contained skeletal remains of cave bears. D. Flutes are the simplest wind instrument that can be constructed to allow playing a diatonic scale. E. The cave-bear leg bone used to make the Neanderthal flute would have been long enough to make a flute capable of playing a complete diatonic scale. 刚才研究了第一套GWD的逻辑，这两个题目我都错了，做得时候就在犹豫，最终还是选错了，后来我仔细一看我错的貌似是一种类型。正确答案分别是A和E，我选的是C和B 我突然想起GWD的笔记上说：逻辑推理要往前推，而不是往后推，比如原文说：利润，选项说：费用（相关），原文说：减税，选项说：获利（无关）当时一直不能很好的理解这句话。现在想想，是不是这两个题目我的思路都是往后推了？比如第一个题目，我先已经承认了这个新产品里面含有胡萝卜素很高，所以推出了其他的产品含量都不如他高？是不是这样想的方向反了？应该说根据原文内容往前推，原文说这个产品好，胡萝卜素含量高，所以这个plan很有胜算，那么往前推，肯定它们要能长出来，这一切才成立？起码给它们个机会能够和其他产品竞争？所以正如A中说的，一切生长条件都符合，所以他们可以被种植，所以使得这个计划能够成功更可信，所以支持了？是不是这么考虑？其实我错的地方就是大家说得“无关”但是怎么老是被绕进去。这类题目究竟应该怎么考虑阿？看了正确答案后，我发现我选的好像有点强词夺理的感觉。要支持A的时候，我都选择了“其他的没有怎样怎样”
[此贴子已经被作者于2009-3-21 15:11:46编辑过] | 
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发表于 2009-3-21 12:35:00
