听力原文: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? (19)
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.
拍照语音搜题,微信中搜索"皮皮学"使用
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知识点:
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【单选题】Удиви ́лся ма ́стер, не пове ́рил _____ cнача ́ла Дани ́лы, а пото ́м по ́нял, что па ́рень говори ́т пра ́вду.