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Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Do you know who ___________ the fact that sound travels in waves?
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Do you know who ___________ the fact that sound travels in waves?
 | Đặng Bảo Trâm | Chat Online |
| 01/09 22:20:50 (Tiếng Anh - Lớp 12) |
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| A. invented | 1 phiếu (100%) |
| B. discovered 0 % | 0 phiếu |
| C. developed 0 % | 0 phiếu |
| D. found 0 % | 0 phiếu |
| Tổng cộng: | 1 trả lời |
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