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Whereas the use of synthetic fertilizers has greatly expanded agricultural productivity in many parts of the world, an increase in their use can create serious environmental problems such as water pollution, and their substitution for more traditional fertilizers may accelerate soil structure deterioration and soil erosion.

正确答案: A

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prep-124中their的问题,看了很多人的解答还是不太懂。。

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楼主
发表于 2011-6-25 12:25:37 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
124.       (31091-!-item-!-188;#058&004372)






Whereas the use of synthetic fertilizers has greatly expanded agricultural productivity in many parts of the world, an increase in their use can create serious environmental problems such as water pollution, and their substitution for more traditional fertilizers may accelerate soil structure deterioration and soil erosion.






(A) an increase in their use can create serious environmental problems such as water pollution, and their substitution for more traditional fertilizers


A中的第一个their为什么肯定的说指synthetic fertilizers 呢,这里又不是从句主语优先指代主句主语~指前面的复数名词parts也有可能嘛~

(B) an increase in their use can create serious environmental problems like water pollution, and if substituted for more traditional fertilizers, it



(C) if these fertilizers are used increasingly, they can create serious environmental problems such as water pollution, and if used as substitutions for more traditional fertilizers, they



(D) the increased usage of these fertilizers can create serious environmental problems such as water pollution, while if substituted for more traditional fertilizers, this substitution



(E) the increased usage of these fertilizers can create serious environmental problems like water pollution, while their substitution for more traditional fertilizers

有的牛牛说 只要没有歧义就行,可是我仍然觉得A中的their可能有歧义啊,能不能请大牛们具体讲解下?因为对their的困惑我真的无法确定的排除C选项。。。

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沙发
 楼主| 发表于 2011-6-25 12:29:07 | 只看该作者
自己顶一下,真心求解答。。
板凳
发表于 2011-7-26 10:37:53 | 只看该作者
我也来顶一下……
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