第27题: [单项选择]Questions 19 to 22 are based on the conversation you have just heard. A. An experiment in Antarctica. B. The breaking-off of the Larsen Ice Shelf. C. The formation of the Larsen Ice Shelf. D. An expedition to Antarctica. 参考答案:B 答案解析:[听力原文] 19-22 M: Doctor White.(19)we recently learned that a large piece of the Larsen Ice Shel