标题: [求助]og12-43 [打印本页] 作者: 饺子joy 时间: 2009-10-28 18:03 标题: [求助]og12-43 43. Installing scrubbers in smokestacks and switching to cleaner-burning fuel are the two methods available to Northern Power for reducing harmful emissions from its plants. Scrubbers will reduce harmful emissions more than cleaner-burning fuels will. Therefore, by installing scrubbers, Northern Power will be doing the most that can be done to reduce harmful emissions from its plants. Which of the following is an assumption on which the argument depends? (A) Switching to cleaner-burning fuel will not be more expensive than installing scrubbers. (B) Northern Power can choose from among various kinds of scrubbers, some of which are more effective than others. (C) Northern Power is not necessarily committed to reducing harmful emissions from its plants. (D) Harmful emissions from Northern Power’s plants cannot be reduced more by using both methods together than by the installation of scrubbers alone. (E) Aside from harmful emissions from the smokestacks of its plants, the activities of Northern Power do not cause significant air pollution ============================================ 为什么选D呢？我怎么觉得它weaken了TOT 作者: zowenny 时间: 2009-10-28 18:29
这是一道假设题，你对选项去非如果是削弱原文 那么该项就是答案作者: zowenny 时间: 2009-10-28 18:31
其实这里包含了一个false dilemma 为什么一定要二选一 两个都选可能效果更好，而D选项就是排除这种可能，只有这样才能说明你用S能最大程度减小.....作者: 饺子joy 时间: 2009-10-28 18:41
谢谢。 哎……我D理解错了orz 作者: 刷牙不起沫 时间: 2010-8-2 10:38
谁能帮忙解答下BC选项，看不懂答案解释，干吗要用even if来解释啊作者: xibao 时间: 2011-3-28 03:20