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SAT English Practice Question

The author of the passage suggests that the invention of optical tweezers is a major breakthrough in medical and scientific research. The text provides an example of this breakthrough: a new way to manipulate particles for study. This is an example of what the text claims is a major breakthrough.

  1. A.Thus,
  2. B.In other words,
  3. C.For example,
  4. D.However,

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