第4题: [单项选择]What does the woman mean A. Professor Zhang couldn’t be in the lab. B. Professor Zhang forgot to turn off the lights in the lab. C. Professor Zhang went home a long time ago. D. Professor Zhang was the last one to leave the lab. 参考答案:A 答案解析:[听力原文] M: Look, the lights in the lab are still on. It must be Professor Zhang who is still in it