九 unit1（上）

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Across
  1. 2. short written record to aid the memory
  2. 5. say or do again
  3. 7. a person receiving medical treatment（医学治疗）
  4. 8. the chemical composition(成分） and properties（特性） of a substance（物质） or object;
  5. 13. way a person speaks the words of a language
  6. 14. not silently
  7. 15. a book giving instruction in a subject
Down
  1. 1. sth kept hidden or known only to a few people
  2. 3. showing of feelings, opinions
  3. 4. sample
  4. 6. (the study or use of) the rules by which words change their forms and are combined into sentences
  5. 9. informal talk in which people exchange news, feelings, and thoughts
  6. 10. make or become larger in amount or number
  7. 11. person who takes part in an activity with another or others
  8. 12. find or learn out
  9. 13. make the sound of letter or word