第29题: [单项选择]I don't think it's wise of you to ______ your greater knowledge in front of the director, for it may offend him. A. show up B. show out C. show in D. show off 参考答案:D 答案解析:该句意为“我认为在主任面前炫耀你自己比别人懂得更多是不明智的,因为这可能冒犯他”。固定搭配show off意为“炫耀,卖弄,显示,表现”。根据题意,D项为正确选项。