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p166 Vocabulary %22the unknown%22

Author: jeong jae won
Description:
Keywords: , , , , , , online teaching

Content:
Definitions:
0. 3
1. economically
2. courageous
3. the unknown
4. vision
5. revolution
6. risk
7. 2
8. reliable
9. efficiently
10. 4
11. 5
12. expedition
13. research
14. explorer
15. 1

Answers:
0. 1
1. someone who travels to places no one has ever visited
2. an idea or dream of what could happen
3. carefully, without wasting money
4. a carefully planned trip, especially to a dangerous place
5. 5
6. a complete change in how we do things
7. the chance something bad might happen
8. 3
9. brave
10. the study of a subject to learn new facts
11. using time, money, or effort effectively
12. dependable
13. 2
14. a place no one has ever been
15. 4
.