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4 Written questions

3 Multiple choice questions

  1. Elisha Otis invented a ________ that kept the cages from crashing to the ground.
  2. Manhatten's first skyscraper, the twenty-two-story Flatiron Building is still a New York _________.
  3. These fitted into slots running the length of the elevator ______, keeping the cage from falling any further.

3 True/False questions

  1. structureA set of steel girders fastened together and supported the _________ of the tall buildings.

          

  2. conveyOtis's invention could be used to ________ people safely to the upper floors of very tall buildings.

          

  3. rodsThese fitted into slots running the length of the elevator ______, keeping the cage from falling any further.

          

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