IELTS: VOCABULARY ON MOBILE PHONES AND TECHNOLOGY (C.Lay-at)

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Across
  1. 5. found everywhere
  2. 7. absolutely necessary
  3. 11. videos that give instructions on how to do something
  4. 12. modern society regarded as the period when the widespread use of computers
  5. 14. someone who is very interested in a particular subject and knows a lot about it:
  6. 15. very modern and with all the newest features:
Down
  1. 1. a small device or machine with a particular purpose
  2. 2. causes worry or alarm
  3. 3. an important discovery or event that helps to improve a situation or provide an answer to a problem:
  4. 4. necessary or needed
  5. 6. to improve the quality or usefulness of something, or change it for something newer or of a better standard:
  6. 8. two people or things having an effect on each other
  7. 9. the practical, especially industrial, use of scientific discoveries:
  8. 10. simple for people to use
  9. 13. someone who knows a lot about computers or other electronic equipment