Cover of the textbook Identity B1+

The key answer of exercise 9

The key to exercise solutions in chapter 8.2 for the textbook Identity B1+ with authors Elizabeth Sharman from Oxford University Press

Question

Listen to a talk about the greatest inventions. Number these inventions in the order they are listed by the professor (1-3).

Answer

  1. the printing press
  2. the lightbulb
  3. antibiotics

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