单选题 Section B (8%) Directions: In this section, you will hear two long conversations. At the end of each conversation, you will hear four questions. Both the conversation 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 write the corresponding letter on the Answer Sheet. Conversation One Questions 6 to 9 are based on the conversation you have just heard. 6