【题目】Smiling and laughing has actually been shown to _________and stress.
A.put on pressureB.fed up withC.relieve tensionD.try out for
在线课程【答案】C
【解析】
考查动词短语辨析。句意：已经证明，微笑和大笑实际上可以缓解紧张和压力。A. put on pressure增加压力；B. fed up with厌烦，厌倦；C. relieve tension缓解紧张；D. try out for参加选拔。根据空后的stress可知，应是“缓解紧张和压力”。故选C项。