单选题 Section B In this section, you will hear one long conversation. At the end of the 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). Long Conversation Questions 3 to 6 are based on the conversation you have just heard. Unit 1 Long Conversation.mp4 3.题干请听音频