单项选择题
Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation.
Which of the following is NOT true according to the conversation? （）
A．She recommended people to take classes. B．She was willing to pay more for classes at home. C．She left her job immediately after her promotion. D．She regarded the business as a pastime at first.
单项选择题 Which of the following is NOT mentioned about the single-lens reflex? （）
单项选择题 Which of the following details about the front of the house is CORRECT?（）
单项选择题 When did Ben first become interested in Mongolia（）
