8.【海洋生物】 8.1 一种生物在海里thrive,是由于N含量高，有一个地区N含量高，但是生物不thrive,p认为是Iron含量低，在海里加了Iron后，生物没有明显增长。作者支持p的观点。 问:什么原因能解释这个discrepancy. 8.2 Plankton generally thrive in areas of the ocean with sufficient concentrations of certain nitrogen compounds near the surface, where plankton live. Nevertheless, some areas, though rich in these nitrogen compounds, have few plankton. These areas have particularly low concentrations of iron, and oceanographers hypothesize that this shortage of iron prevents plankton from thriving. However, an experimental release of iron compounds into one such area failed to produce a thriving plankton population, even though local iron concentrations increased immediately.
Which of the following, if true, argues most strongly against concluding, on the basis of the information above, that the oceanographers' hypothesis is false?
(A)Not all of the nitrogen compounds that are sometimes found in relatively high concentrations in the oceans are nutrients for plankton. (B)Certain areas of the ocean support an abundance of plankton despite having particularly low concentrations of iron. (C)The release of the iron compounds did not increase the supply of nitrogen compounds in the area. (D)A few days after the iron compounds were released, ocean currents displaced the iron-rich water from the surface. (E)The iron compounds released into the area occur naturally in areas of the ocean where plankton thrive. weaken 选D I think this one should be B, does anyone has the arguement for this one?
电影那个找到一个类似的原题 GWD30-Q14 Background information: This year, each film submitted to the Barbizon Film Festival was submitted in one of ten categories. For each category, there was a panel that decided which submitted films to accept. Fact 1: Within each category, the rate of acceptance for domestic films was the same as that for foreign films. Fact 2: The overall rate of acceptance of domestic films was significantly higher than that of foreign films. In light of the background information, which of the following, if true, can account for fact 1 and fact 2 both being true of the submissions to this year’s Barbizon Film Festival? A. In each category, the selection panel was composed of filmmakers, and some selection panels included no foreign filmmakers. B. Significantly more domestic films than foreign films were submitted to the festival. C. In each of the past three years, the overall acceptance rate was higher for foreign than for domestic films, an outcome that had upset some domestic filmmakers. D. The number of films to be selected in each category was predetermined, but in no category was it required that the acceptance rate of foreign films should equal that of domestic films. E. Most foreign films, unlike most domestic films, were submitted in categories with high prestige, but with correspondingly low rates of acceptance. 答案是E
50/72木房子水泥房子 在别的寂静上看到解释 ，逻辑比较确定一题错了，就是树木房子和水泥房子的那题。我认为答案应该是B 这题我觉得考点在于一个式子 saving=cost of wood - cost of cement A答案说，实验的地方冬天特别冷，夏天特别热，那么这个条件其实对wood house and cement house是一样的，所以可以作为一个regardless 的选项 B说，用于实验的木头材料的保温性能特别好，一般来说由于特别贵所以没有被resident使用。 这个的话就是说，实际上cost of wood可能会更高，那么saving会更大
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发表于 2011-7-19 21:46:21
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