【正确答案】 B

【答案解析】[听力原文]
   M: John just called in sick.
   W: In my memory he has never asked for sick leave.
   Q: What can we learn from the conversation?
[考点] 推理题
问题问的是从对话中可以知道什么?男士说约翰刚刚请了病假，女士则说在她记忆中约翰从没有因病请过假。由此可见，约翰病了。故选B。