[单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. His son hit him on the arm. B. He stumbled over a stone and fell. C. He bumped the arm against a piece of furniture. D. He knocked over a coffee pot.
参考答案:C 答案解析:[听力原文] W: Where did you get that terrible bruise on your arm M: I banged it against the corne