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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.
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
我有更好的解析 
暂无雷哥网文字解析
原文意思： 使用化肥极大地扩大了农业产量， 化肥的使用也会导致环境污染并且化肥的使用也会加速土壤的恶化。
题目分析： 原文有一个并列关系，就是化肥的使用会导致 A 和 B 两种结果，A 选项 and 前后写的比较对应，留着。B 选项 and 后面跟 if substituted，和前面无法对应，干掉。C 选项 and 后面也用 if 和前面不对应，干掉。D 后面用 if substituted 和前面不对应，杀。E while 后面用their substitution 前面用 increase usage， 如果这么写就是 usage 和后面的 substitution对应了，我强调的意思是化肥使用的增加和化肥代替传统饲料，是 increase 和后面的substitution 形成对应，E 虽然语法写的比较对应，但是对应的地方错了，杀！
ziqi
增长和替代对应
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2022-04-25 09:04:36
鸡鸡沙西米
The problem with D lies at the end of the choice: "while if substituted for more traditional fertilizers, this substitution..." Notice the first part of that, before the comma - it never actually mentions what is being substituted, either via a noun or pronoun. This is a modifying clause. The modifier is meant to modify "synthetic fertilizers" which is a noun, so this is a noun modifier - and noun modifiers must touch the noun they modify. But "this substitution" follows the comma, not "synthetic fertilizers" (or some other noun or pronoun that refers to synthetic fertilizers). No good. Eliminate D.
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2021-11-26 13:54:35
DamienExam
不懂就问，increase自己可以create么？
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2021-03-06 15:14:24
Sam0801回复DamienExam
肯定不可以 所以原文是increase in their use 才 create
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2021-04-03 17:26:25
Audreyrey
习语-such as，表示举例时用such as，而不是用like,排除BE。c中they指代不清。D，while if substituted for more traditional fertilizers, this substitution，赘余。A是两个较长句子用and连接，中间可以用逗号
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2021-01-15 18:46:29
Yosemeen
https://gmatclub.com/forum/whereas-the-use-of-synthetic-fertilizers-has-greatly-expanded-agricult-69585.html
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2020-12-29 12:24:44
1380406ankt
应该动脑子的是你好吗，a中they 和their指代的都是化肥
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2020-11-13 09:53:10
340101igzc
不懂就问，and their substitution...accelerate中，substitution单数，但是accelerate不是单三真的可以吗？
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2020-07-14 10:23:11
Ptk回复340101igzc
前面不是有个may吗
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2020-08-10 16:55:49
171354oxd回复340101igzc
因为用了情态动词may啊……情态动词后面跟动词原形…
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2020-08-25 09:43:15
171354oxd回复340101igzc
accelerate是跟在情态动词may后面啊，用原型即可
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2020-10-17 13:39:48
700加我来辣
the main problem i see with choice (c) is "if used as substitutions for..." this implies that the fertilizers themselves are "substitutions". that doesn't make sense; a "substitution" is actually the process of substituting one thing for another, not one of the things themselves. as an analogy, it would be correct to say i exchanged my rental car for a truck, but incorrect to say this truck was an exchange for my rental car.
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2019-11-27 17:27:52
700加我来辣回复700加我来辣
RON 认可的C解释
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2019-11-27 17:28:10
700加我来辣回复700加我来辣
But, C is fine, mechanically at least. You have two legitimate "if ___, then ___" sentences, connected by "and". The "whereas ___" part is also fine (mechanically, this could be stuck on the front of any sentence).
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2019-11-27 17:33:45
EvaBabe
C没表达出是“替代”may accelerate BE中like不用于举例
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2019-07-25 15:34:53
stevenyang
C选项是句意问题
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2018-12-31 15:17:27
zhangxiao720
b：举例不可以用like。 c：最后一个they指代的fertilizers，但是原文的意思是这种substitution会 accelerate d：while 后面的句子，if后面没有主语，所以他的逻辑主语是后面的 this substitution，显然不合逻辑。 e：举例不能用like。
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2018-12-05 09:49:42
小洛杀G回复zhangxiao720
这个好，说出了c的根本问题是语义
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2019-03-30 12:21:25
carmen97
c错： 原意：化肥的增加使用，和，化肥越来越多的对传统化肥的替代，产生了xxx影响。 但是c的they may accelerate，they指的是化肥本身，而不是它的越来越多的替代
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2018-11-25 22:17:50
璐璐的张先生
A选项不也是错的么？应该是使用化肥破坏了环境，而不是increase 做主语后，increase破坏了环境吧？
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2018-09-29 11:53:06
1123
Ｄ选项我们要注意的是后面的从句， while if substituted for。。。这说明第一个词一定是这个化肥！！而不是ｕｓａｇｅ，杀Ｄ
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2018-09-21 11:03:06
Heaven不睡
e，根据句意来作答的话，while表示转折关系，而while前后表达的都是副作用，故不存在转折，应该用and并列
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2018-09-13 12:49:52
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