Ответ:

  1. False. Artyom is seventeen years old.
  2. True. Ivan is always excited about new ideas.
  3. True. Pyotr is easily frightened by changes.
  4. Not stated. The text does not say that Ivan and Pyotr are brothers.
  5. False. Pyotr, not Ivan, was considering moving to another city.
  6. False. Artyom believes that being different is not a problem.

Ответ: 1 — False; 2 — True; 3 — True; 4 — Not stated; 5 — False; 6 — False.