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4 Written questions

3 Multiple choice questions

  1. A set of steel girders fastened together and supported the _________ of the tall buildings.
  2. These fitted into slots running the length of the elevator ______, keeping the cage from falling any further.
  3. Otis's invention could be used to ________ people safely to the upper floors of very tall buildings.

3 True/False questions

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

          

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

          

  3. deviceHis invention kept accidents from happening if a rope or wire ________ broke.