In the Olympic Games, only athletes who have reached the agreed standard for their will be allowed as petitors.
A. event
B. course
C. outline
D. schedule
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(答案→)A. event
B. course
C. outline
D. schedule
解析：考查名词辨析：A.event 事件，赛事，B.course课程， C.outline轮廓，提纲，D.schedule时刻表，安排表，句意：在奥运会上，只有达到赛事的统一标准的运动员才能被允许参赛。选A。