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PREP 1我的正确率还不错的，而且我正在结合OG一起看，希望把OG的思维贯彻到真题当中，这种方法目前看来有效，就是会占用模考的时间，有NN有经验的话评价一下~ 言归正传，目前做到的PREP1题中，有几题我觉得思维很绕，不知道是不是暴露了某方面的弱点，请NN指点题目以及思路。 声明：我看过讨论贴的内容，但觉得都没有解答好问题。 13. (26741-!-item-!-188;#058&002910)
Which of the following most logically completes the argument?
United States manufacturers currently produce most of the world's solar-power generators--most of which are exported to Europe. However, European manufacturers are emerging and probably will ultimately capture much of the European market. The United States government is funding initiatives intended to encourage use of solar power within the United States. If these initiatives succeed in increasing the demand for solar-power generators in the United States, United States manufacturers will probably maintain significant production levels, since __________.
(A) some United States manufacturers have been substantially increasing their output over the last several years (B) the efficiency of solar-power generators in converting energy from the Sun into electric power is not improving as fast as it once did (C) just as European manufacturers enjoy certain competitive advantages in Europe, so do United States manufacturers in the United States (D) European governments are currently undertaking initiatives to stimulate the use of solar power within Europe (E) the current market for solar-power generators in the United States is very limited 答案是C，我选了E。我感觉单纯就做题技巧来说，结合题干提到的主体，选C合适。但是E 的确也是一个前提呀。 21. (28551-!-item-!-188;#058&003690) 搞不定 Traces of cultivated emmer wheat have been found among the earliest agricultural remains of many archaeological sites in Europe and Asia. The only place where the wild form of emmer wheat has been found growing is a relatively narrow strip of southwest Asia. Since the oldest remains of cultivated emmer wheat yet found are from village sites in the same narrow strip, it is clear that emmer wheat was first domesticated somewhere in that strip.
Which of the following, if true, most strengthens the argument?
(A) The present-day distribution of another wild wheat, einkorn, which was also domesticated early in the development of agriculture, covers a much larger area of southwest Asia. (B) Modern experiments show that wild emmer wheat can easily be domesticated so as to yield nearly as well as traditionally domestic strains. (C) At the time when emmer wheat was first cultivated, it was the most nutritious of all the varieties of grain that were then cultivated. (D) In the region containing the strip where wild emmer wheat has been found, climatic conditions have changed very little since before the development of agriculture. (E) It is very difficult, without genetic testing, to differentiate the wild form of emmer wheat from a closely related wild wheat that also grows in southwest Asia.
答案是D，我选了B。我觉得思维绕不出来。
24. (29155-!-item-!-188;#058&003857) 未搞定——据说OG上有这道题，找半天没找到，有人知道题号吗？ Tiger beetles are such fast runners that they can capture virtually any nonflying insect. However, when running toward an insect, the beetles intermittently stop, and then, a moment later, resume their attack. Perhaps they cannot maintain their pace and must pause for a moment's rest; but an alternative hypothesis is that while running tiger beetles are unable to process the resulting rapidly changing visual information, and so quickly go blind and stop.
Which of the following, if discovered in experiments using artificially moved prey insects, would support one of the two hypotheses and undermine the other?
(A) When a prey insect is moved directly toward a beetle that has been chasing it, the beetle immediately turns and runs away without its usual intermittent stopping. (B) In pursuing a moving insect, the beetles usually respond immediately to changes in the insect's direction, and pause equally frequently whether the chase is up or down an incline. (C) The beetles maintain a fixed time interval between pauses, although when an insect that had been stationary begins to flee, the beetle increases its speed after its next pause. (D) If, when a beetle pauses, it has not gained on the insect it is pursuing, the beetle generally ends its pursuit. (E) When an obstacle is suddenly introduced just in front of running beetles, the beetles sometimes stop immediately, but they never respond by running around the barrier. 答案是C,我选了B.思维还是绕不出来。。。 37. (32356-!-item-!-188;#058&006101)
Capuchin monkeys in Venezuela often rub a certain type of millipede into their fur. Secretions of these millipedes have been shown to contain two chemicals that are potent mosquito repellents, and mosquitoes carry parasites that debilitate the capuchins. The rubbing behavior is rare except during the rainy season, when mosquito populations are at their peak. Therefore, the monkeys probably rub the millipedes into their fur because doing so helps protect them against mosquitoes.
Which of the following would it be most useful to determine in order to evaluate the argument?
(A) Whether the two chemicals provide any protection for the millipedes against their own predators (B) Whether the type of millipede used by the capuchin monkeys in Venezuela is found in other parts of the world (C) Whether animals other than capuchins rub insects of any kind into their fur (D) Whether the only time the millipedes are readily available to the capuchins is during the rainy season (E) Whether secretions of any other insects accessible to the capuchins contain chemicals that repel mosquitoes 这道题选对了，但是，还是觉得很绕，没办法很清晰地想通。 恳请指教^^ | 
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发表于 2009-3-27 11:36:00
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