duc, duct词根练习：

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Across
  1. 3. a person whose job is to teach or educate people
  2. 5. a process of teaching, training and learning, especially in schools or colleges, to improve knowledge and develop skills:
  3. 7. to teach sb over a period of time at a school, university, etc:
  4. 8. to make sth less or smaller in price, quantity, size, etc:
  5. 9. the process of growing or making food, goods or materials, especially large quantities:
  6. 11. lead or guide (sb/sth)
  7. 12. an act of making sth less or smaller; the state of being made less or smaller
Down
  1. 1. to tell two or more people who have not met before what each others' names are; to tell sb what your name is
  2. 2. to make things to be sold, especially in large quantities
  3. 4. to produce sth again; to make sth happen again in the same way
  4. 6. a thing that is brought into use or introduced to a place for the first time
  5. 10. someone who stands in front of a group of musicians or singers and directs their playing or singing