U4词汇复习

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Across
  1. 3. / To use fire to destroy something.
  2. 4. / To chase and kill wild animals for food or sport.
  3. 6. / To keep safe from harm.
  4. 7. / A very large animal that lives in the ocean.
  5. 11. / A fight between countries or groups.
  6. 12. / When the environment is made dirty and harmful.
  7. 13. / A very dry area of land with little rain and few plants.
  8. 14. / A place you can visit on the Internet.
  9. 16. / To go away or vanish.
  10. 19. / The answer to a problem.
  11. 21. / A man-made material used to make bags and bottles.
  12. 22. / Very, very cold.
Down
  1. 1. / Causing damage or injury.
  2. 2. / A strong wind in the desert that carries sand.
  3. 4. / A word used to show a different idea is coming.
  4. 5. / When the wind moves, it does this.
  5. 6. / A large body in space that orbits a star, like Earth.
  6. 8. / The ruler of an empire.
  7. 9. / An insect with colorful wings.
  8. 10. / To place something over or upon.
  9. 15. / To travel to discover new places.
  10. 17. / A group of parts that work together as a whole.
  11. 18. / A thick, black liquid from the ground, used to make fuel and plastic.
  12. 20. / Belonging to you.
  13. 23. / A substance like air, or a fuel for cars and cooking.