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4 K Read the article again and listen.
Answer the
questions.
Which mystery...
1 involves the possible ancient use of modern
technology?
2 involves an object found in Asia?
3 involves the oldest object?
4 hasn't been connected with alien activity?
5 was discovered in a really old city?
6 started half a century ago?
came from under the earth?
8 involves a round object with strange patterns on it?

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