Section B

 Directions:in this section, you will hear 2 passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A、, B、, C、 and D、 Then mark the corresponding letter on the Answer Sheet with a single line through the center. Passage One Questions 15 to 17 are based on the passage you have just heard. 

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