听力原文：M: Can you tell me when I can catch the next bus to the Medical School It seems听力原文：M: Can you tell me when I can catch the next bus to the Medical School It seems like I’m going to be late for my class this morning. It’s already 7:38. W: Well, you just missed a bus by 4 minutes. Then you’ll have to wait another 15 minutes for the next one. Q: When did the bus leave according to the conversation （）A．7:38B．0．315278C．0．328472