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  3. [audioFiles]audio_eusm_j03_001(20082)[/audioFiles]A、How primitive people used f

[audioFiles]audio_eusm_j03_001(20082)[/audioFiles]A、How primitive people used f

游客2024-06-15  46
问题  
选项 A、How primitive people used flags.
B、What the ancient means of communication was.
C、Why the torch towers were built.
D、How the Great Wall came into being.
答案 B
解析 M: People first sent signals by flags, some archaeologists observed.
W: No. I think they exchanged news by smoke, hence the torch towers on the Great Wall.
Q: What are they discussing?
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