p166 Vocabulary %22the unknown%22Author: jeong jae won Description: Keywords: , , , , , , online teaching
Content: Definitions: 0. the unknown 1. explorer 2. 2 3. research 4. efficiently 5. vision 6. expedition 7. reliable 8. 1 9. courageous 10. 4 11. economically 12. risk 13. 5 14. 3 15. revolution
Answers: 0. the chance something bad might happen 1. an idea or dream of what could happen 2. carefully, without wasting money 3. brave 4. someone who travels to places no one has ever visited 5. dependable 6. a complete change in how we do things 7. 2 8. the study of a subject to learn new facts 9. a place no one has ever been 10. 3 11. using time, money, or effort effectively 12. 4 13. 5 14. a carefully planned trip, especially to a dangerous place 15. 1
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