以下是引用fantasy06在2007-1-10 12:58:00的发言:
Scientists have made genetic modifications to cotton to increase its resistance to insect pests. According to farmers’ report, the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not. Therefore, since the modified seed costs more than ordinary seed without producing yields of higher market value, switching to the modified seed would be unlikely to benefit most cotton farmers economically. Which of the following would it be most useful to know in order to evaluate the argument? - Whether farmers who tried the modified cotton seed had ever tried growing other crops from genetically modified seed.
- Whether the insecticides typically used on ordinary cotton tend to be more expensive than insecticides typically used on other crops.
- Whether for most farms who grow cotton it is their primary crop
- Whether the farmers who have tried the modified speed planted as many acres of cotton, on average, as farmers using the ordinary seed did.
- Whether most of the farmers who tried the modified seed did so because they had previously had to use exceptionally large quantities of insecticide.
B, D, E 争议, 我觉得B other crop 无关,D, E 都行,因为都是insecticide 总量和 per acre 单位量的问题。哪个对呢? 这题比较分特,偶米啥看法,大概是觉得B比较好一些吧,就把当时从讨论贴里copy下来的东东贴给你看看咯~
原文已经说了新的东东只比旧的东东省一点点农药,单纯从E是推不出改后用农药多少,改后用药多少是从原文得出E只在为何改上讲,除此之外什么也没说,更不能得出任何对算经济账有用的信息,所以不妥。 而B则隐含一个小问题,那就是B中的other crops 能否包括modified cotton(注意只要包括就可以)。我认为应该包括。other 修饰的crops用复数,other在这里的意思为:the rest。 used to refer to all the people or things in a group apart from the one you have already mentioned or the one that is already known about. 即除你已知道或提到的之外的全部。对B选项已经提到的是ordinary cotton,除ordinary cotton之外的全部庄家,当然应该包括modified cotton。其实B要表达的意思是ordinary cotton用的农药是最贵的,直接告诉你比modified cotton太便宜你,这不是ETS的风格,他们总要绕着说 具体到本题,原文是在算经济账,算算新旧品种那种合算。跟其他因素无关。新品种省农药但种子贵,旧品种种子便宜但用药多。要严格比较那种在经济上合算,是必须将有关的价格因素进行对比,多多少,少多少,但原文没有,这就是为何该题不是问ASSUMPTION的原因(必须排除其他可能)。问题问支持反对,满足两个条件就可以(当然MOST题时存在程度的问题)。对B选项,如果旧品种用的农药比新品种贵,这在更换新品种的经济账上加了一个筹码,更换经济合算的可能性增大,起支持作用。反之,则在更换新品种的经济账上减了一个筹码,更换经济不合算的可能性增大,其反对作用。所以B正确。 |