第31题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. The experiment will take a long time. B. The students should count their time in the lab. C. Dr. Walters teaches biology in the afternoon. D. Biology lab is open one hour every afternoon. 参考答案:A 答案解析:[听力原文]
M: I’m going to the lab for an hour to do that biology experiment.
W: For an hour Dr. Walt