【题目】— Do you think the only way to truly know a person is to argue with him?
— I can't agree more. When the argument is _______ it reveals their character.
A.in full swingB.in the airC.under the noseD.under the counter
在线课程【答案】A
【解析】
考查介词短语辨析。句意：——你认为唯一可以真正了解一个人的方法是和他争论吗？——我非常同意。当争论全面展开时，它会揭露他们的性格。A. in full swing全面展开；B. in the air悬而未决；C. under the nose私下地；D. under the counter违法，走后门。根据it reveals their character.可知，此处用“全面展开”符合语境，故选A项。