第30题: [单项选择]Questions 15-18 are based on the following dialogue:Where did the woman learn about dolphins A. In a book.. B. From a television program. C. During a trip that she took.. D. From a lecture. 参考答案:D 答案解析:[听力原文]15-18 W: Wasn’t that a terrific lecture on dolphins I didn’t know that dolphins traveled i