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y times, transportation on land was very simple. If man wanted to move something, he carried it on his back. Later, travel on horseback became common. Finally the wheel was used. It was much easier to move around. People began to travel different places, and new roads had to be built.
사람 → 말 → 바
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shops, because shopping will be done at home by computers. Computers might one day replace doctors.
① many ② more ③ a little ④ fewer
⑤ much
1. ③ 2. ④ 3. ③ 4. ① 5. ⑤ 6. ③ 7. ① 8. ② 9. ② 10. ④ 11. ⑤ 12. mind 13. ③ 14. ① 15. ② 16. ① 17. ② 18. ④ 19. ① 20. 21. 22. ② 23. ③
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