标题: OG12 CR NO.67 [打印本页] 作者: pro_z 时间: 2010-5-21 15:39 标题: OG12 CR NO.67 题目虽然是做对了。但是解释部分没有明白~~不知道GMAT出题者对这道题目的思路是什么的，请求达人指点！thx~~~作者: bonnie0715 时间: 2010-5-21 18:36
请帖题作者: leonfine 时间: 2010-5-24 23:00
Several industries have recently switched at least partly from older technologies powered by fossil fuels to new technologies powered by electricity. It is thus evident that less fossil fuel is being used as a result of the operations of these industries than would have been used if these industries had retained their older technologies. Which of the following, if true, most strengthens the argument above? (A) Many of the industries that have switched at least partly to the new technologies have increased their output. (B) Less fossil fuel was used to manufacture the machinery employed in the new technologies than was originally used to manufacture the machinery employed in the older technologies. (C) More electricity is used by those industries that have switched at least partly to the new technologies than by those industries that have not switched. (D) Some of the industries that have switched at least partly to the new technologies still use primarily technologies that are powered by fossil fuels. (E) The amount of fossil fuel used to generate the electricity needed to power the new technologies is less than the amount that would have been used to power the older technologies作者: leonfine 时间: 2010-5-24 23:07
E 非常完美啊。
C,D两个选项就明显错误了。作者: 特强薄荷 时间: 2010-10-11 21:03
谁能把题目选项翻译一下作者: coocooper 时间: 2010-10-21 10:33
但是这里书上对B是这么解释的： it does not matter how much fossil fuel was used to manufacture the older techonoogies originally. That has no bearing on whether more fossil fuel would have been expended as a result of the continued operation of the industries if the partial switch to newer techonologies had not occurred. 我就真的不明白了，这个解释什么意思啊？ 请指教！作者: Raymond_GMAT 时间: 2011-2-18 22:44
题目，有些工厂把原来用燃料的产能转化为用电的产能，结论，燃料用得比以前少了。