听下面一段材料,回答 17~20 题。
第 17 题 What does the speaker do most probably?
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What is the probable result of the conversation?
Which of the following is NOT right according to the passage?
根据下列材料请回答 72~75 题:
第 72 题 It is mentioned in the passage that one has to pay tax according to___.
It can be concluded that the passage is most probably part of a(n) ___.