Voc. p.126, 128, 129

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Across
  1. 1. > going in the wrong direction
  2. 6. > a small planet which goes round the sun
  3. 9. > a person who works in a spacecraft
  4. 10. > a ticket for a journey to a place and back again
  5. 11. off >> take off
  6. 15. > how important something or someone is
  7. 17. > using the most advanced machines and methods
  8. 18. >> competitor
Down
  1. 2. > to make something more modern
  2. 3. > a scientific test
  3. 4. > to watch something or somebody secretly
  4. 5. >> simple
  5. 7. > very interesting
  6. 8. > not one (of a group of three or more)
  7. 12. >< real
  8. 13. > say what you think will happen in the future
  9. 14. > a Russian astronaut
  10. 16. > the study of diseases