{"id":389,"date":"2011-05-26T13:40:58","date_gmt":"2011-05-26T20:40:58","guid":{"rendered":"http:\/\/e-gmat.com\/blogs\/?p=389"},"modified":"2022-11-15T19:13:59","modified_gmt":"2022-11-15T13:43:59","slug":"leaching-the-recovery-of-copper-from-the-drainage-gmatprep","status":"publish","type":"post","link":"https:\/\/e-gmat.com\/blogs\/leaching-the-recovery-of-copper-from-the-drainage-gmatprep\/","title":{"rendered":"Leaching, the recovery of copper from the drainage \u2026GMATPrep"},"content":{"rendered":"A <\/span> 3<\/span> min read <\/span><\/span>\n

Leaching, the recovery of copper from the drainage water of mines, as a method of the extraction of minerals, it was well established<\/span><\/strong> as early as the eighteenth century, but until about 25 years ago miners did not realize that bacteria took an active part in the process.<\/p>\n\n\n\n

  1. as a method of the extraction of minerals, it was well established<\/li>
  2. as a method of the extraction of minerals well established<\/li>
  3. was a well-established method of mineral extraction<\/li>
  4. was a well-established method of extracting mineral that was<\/li>
  5. had been a method of mineral extraction, well established<\/li><\/ol>\n\n\n\n

    What does this question test?<\/h2>\n\n\n\n

    This question tests your ability to analyze the sentence structure and identify all SV pairs.  It also tests your understanding of the verb tenses to ensure that you reject answer choices that do not communicate the intended meaning of the sentence.<\/p>\n\n\n\n

    What does the sentence mean?<\/h2>\n\n\n\n

    This sentence talks about \u201cleaching\u201d. \u00a0It first defines the term \u201cleaching\u201d. \u00a0It is recovery of copper from the drainage water of mines. \u00a0It then states that this is well established method of extraction of minerals even in 18th century. \u00a0Then the sentence brings up a paradox, stating that despite this process being so old, only 25 years back miners realized that bacteria took an active part in this process.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

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    <\/p>\n\n\n\n

    What are the errors in the original sentence?<\/h2>\n\n\n\n

    Here is the sentence structure of this sentence:<\/p>\n\n\n\n