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Early in the twentieth century, Lake Konfa became very polluted. Recently fish populations have recovered as release of industrial pollutants has declined and the lake’s waters have become cleaner. Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again. However, a technology for preventing leaks is being installed. Therefore, provided this technology is effective, those fears are groundless.

The argument depends on assuming which of the following?


  • 分析A选项 分析选校图标
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  • 分析B选项 分析选校图标
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  • 分析C选项 分析选校图标
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  • 分析D选项 分析选校图标
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  • 分析E选项 分析选校图标
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该题平均耗时:2m3s ,平均正确率:72.2%。 该题由网友9mkpNE提供。更多GMAT题目请

网友解析

当前版本由 感觉自己萌萌哒 更新于2015-11-20 16:18:53 感谢由 感觉自己萌萌哒 对此题目的解答所做出的贡献。

题干分析 20世纪初,K 湖污染很重。最近对鱼类的污染已经好转了很多,因为工业污染物的排放已经减少了 很多,湖水已经干净很多了。但是人们又开始担心一个在湖底建一个油管的计划会让湖水重新污染,鱼类又会 减少。但是已经有一个防止泄露的技术,所以人们不需要担心。问削弱。 

选项分析 污染是不是仅仅可能是泄露造成的?也可能是因为装油管当中的其他事情导致再次污染呀。 

A.装油管会影响湖底的沉积物,导致已经沉淀的有害物质又扩散到水中。正确,他因削弱。 

B.对土地的利用和湖周围的排水方式的改变说明湖水会被农业排污所影响。无关,排除。

C.这个防泄漏技术已经使用了很多年,没有一个使用过的地方受到了严重污染。加强选项,排除。

D.油管泄露不仅会对鱼类有害,还会影响其他湖水的动植物。也就是说防止泄露就不会对湖水有影响了,加 强,排除。 E.20世纪开始,非本土的鱼类被引入这个湖,现在已经在鱼数量中占据较大比例。无关,排除。


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  • 用户头像

    Kath1230

    However, a technology for preventing leaks is being installed. Therefore, provided this technology is effective, those fears are groundless. 结论是说有了技术防止漏油,担心就不必要了
    问假设支持
    A Apart from development related to the pipeline, there will be no new industrial development around the lake that will create renewed pollution in its waters. 除了pipeline 这里没有其他的工业发展会制造污染物 有没有其他的污染物和这个oil tech起不起作用没有关系 所以支持不了oil tech起作用,担心不必要
    B There is no reason to believe that the leak-preventing technology would be ineffective when installed in the pipeline in Lake Konfa.无关
    C The bottom of the lake does not contain toxic remnants of earlier pollution that will be stirred into the water by pipeline construction. lake底下不包含有毒的污染残留,pipeline建设的时候不会搅乱 tech起作用了,就看看有没有其他的原因导致污染物,他因支持了结论
    D Damage to the lake’s fish populations would be the only harm that a leak of oil from the pipeline would cause. 无关
    E The species of fish that are present in Lake Konfa now are the same as those that were in the lake before it was affected by pollution.无关
    6楼  | 2019-02-13 10:36:15 回复
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    黄小文要柒

    the method is good but not always effective. However keeping practice in this way can improve your sensibility and intuition and, more importantly, save your time.
    5楼  | 2017-11-19 15:22:38 回复
  • 用户头像

    黄小文要柒

    Ok, then i wll explain how to get your point in the question.
    
    For the question stem like this one : Find a Assumption, you should understand that what you need to do is to find out an choice with the following feature: If the information provided in the choice is not true, then the conclusion of the argument fails.
    
    Therefore, you have to understand the structure of the stimulus at first ( in details, of course.It is quite difficult at first, but when you learn the way to deconstruct the argument and then keep practices, you will find that your speed will increase rapidly. I highly recommend you to learn the methods from Manhattan Guidebooks and learn the way called active reading from Chasedream Forum.)
    
    If you can deconstruct the stimulus in details and correctly, then you will find the logical gap in the question. 
    Clearly, the speaker assumes that if we can stop the leak, then the pollution doesn't happen. In other words, the leak is the only reason to cause the pollution problem in the construction plan. Therefore, we got this assumption and we start to look for it among the answer choices. Then, C is the correct answer.
    4楼  | 2017-11-19 15:19:45 回复
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    黄小文要柒

    如果看过manhattan sc的应该看得懂接下来的错误选项分析。
    A. No tie to the Argument.be careful! the argument stick to the planned construction and the concern over it. influences caused by other construction are out of scope.
    B. Irrelevant. The choice is a tricky one, indeed. However, if you use the technique: negation, the choice is clearly invalid. You have to stick to the conclusion: the conclusion is that: provided that the anti-leaking measures are effective, the worrying about the leaking and the result it may cause is groundless. Even though the existence of doubts is reasonable, the conclusion is still valid as a doubt cannot attack the validity of the conclusion.
    C. Correct answer. I will explain how to get the point later.
    D. Irrelevant+ No tie to the Argument: once again. you have to stick to the argument. Even the damage is more widespread, What the argument and the conclusion all concern about is the influence to the fish. So even we use negation skills in the choice, the conclusion is still valid.
    E. irrelevant comparison. the choice....in my pespective...is out of scope. In short, There is no clear relationship between the decline in the number of the fish and the fish species. If you still cannot get the point, try to understand the stimulus at first and then negation the choice.
    3楼  | 2017-11-19 15:09:50 回复
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    杀G大作战

    问:由于加了保护措施,所以担心管道污染湖水是没有意义的
    结论的前提条件
    漏洞:除了泄露油会产生污染之外,管道本身可能带来其他影响
    
    A 除了建设管道,没有其他新建工厂会产生新的污染进入水中 无关
    B 没有理由相信防护措施无效 重复信息,无法增强或削弱
    C 湖底没有会被管道搅拌进入水中的毒物质 补充漏洞,正确
    D 漏油是唯一可能污染 削弱,证明担心没意义
    E 鱼前后数量的变化 无关
    2楼  | 2017-10-08 20:10:03 回复
    • 评论用户头像
      河边柳青青: 6

      2017-10-15 15:21:37 回复

    • 评论用户头像
      蓝玫圣代: 正解

      2018-10-22 20:18:24 回复

    • 评论用户头像
      Metoo: 我觉得D对

      2018-10-25 15:15:47 回复

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  • 用户头像

    奋斗的小汤圆

    答案不对题吧
    1楼  | 2017-09-13 20:47:51 回复
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