标题: OG12 97 !!!!!!!! [打印本页] 作者: Eileenl 时间: 2010-10-18 18:52 标题: OG12 97 !!!!!!!! 97. Delta Products Inc. has recently switched at least partly from older technologies using fossil fuels to new technologies powered by electricity. The question has been raised whether it can be concluded that for a given level of output Delta’s operation now causes less fossil fuel to be consumed than it did formerly. The answer, clearly, is yes, since the amount of fossil fuel used to generate the electricity needed to power the new technologies is less than the amount needed to power the older technologies, provided level of output is held constant.the argument given, the two boldfaced portions play which of the following roles? (A) The fi rst identifi es the content of the conclusion of the argument; the second provides support for that conclusion. (B) The fi rst provides support for the conclusion of the argument; the second identifi es the content of that conclusion. (C) The fi rst states the conclusion of the argument; the second calls that conclusion into question. (D) The fi rst provides support for the conclusion of the argument; the second calls that conclusion into question. (E) Each provides support for the conclusion of the argument 选了C。。。。。这种类型的题错了N遍。。。。哎，球解题思路作者: Eileenl 时间: 2010-10-21 09:01
自己顶下。。。。