og128没有问过的问题，请nn指教

sumerlaws

128. New hardy varieties of rice show promise of producing high yields without the costly requirements of
irrigation and application of commercial fertilizer by earlier high-yielding varieties.
(A) requirements of irrigation and application of commercial fertilizer by earlier high-yielding varieties
(B) requirements by earlier high-yielding varieties of application of commercial fertilizer and irrigation
        
(C) requirements for application of commercial fertilizer and irrigation of earlier high-yielding varieties
(D) application of commercial fertilizer and irrigation that was required by earlier high-yielding varieties
(E) irrigation and application of commercial fertilizer that were required by earlier high-yielding varieties
Answer to Question 128
Choice E, the best answer, clearly and grammatically expresses the idea that two costly procedures, irrigation
and the application of... fertilizer, were required by earlier high-yielding varieties of rice. In A, the placement
of by earlier... varieties immediately after application of fertilizer suggests that the varieties applied the
fertilizer. In B and D, the phrase application of... fertilizer and irrigation is ambiguous in meaning: it cannot be
clearly determined whether applying fertilizer and irrigating are a single operation or two distinct operations. In C,
only irrigation--not both irrigation and fertilization--is clearly associated with the earlier... varieties of rice.
我的问题是，为什么B会产生ambiguity呢？前面不是有requirements吗？虽然我知道B不如E好，但是requirements不足以消除它的ambiguity吗？请高手看看

sumerlaws

哇，哈哈，我事隔3年才看到当年的问题，觉得我怎么能看的明白题目呢？

poorleafes

requirements by earlier high-yielding varieties of application of commercial fertilizer and irrigation
   
我知道你的意思了，现回答如下：
requirements by （earlier high-yielding varieties of application of commercial fertilizer） and irrigation
requirements by earlier high-yielding varieties of application of commercial fertilizer and irrigation
   
这样会有歧义了吧？

sumerlaws

还是谢谢你，哈!!

sumerlaws

我明白你的意思，但是这样的说法和og答案是大同小异的，还是不能解释requirements能不能消除ambiguity的问题，照og的答案，应该是不行的……算了，我想这大概也是ets的意思，不能通过其他句子的部分来消除某部分的ambiguity吧。

onedayling

in B, application
        of
    commercial fertilizer and irrigation are two different things, here, it gives people the feeling that it is the application of irrigation that is costly, when in fact, irrigation itself is independent.