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He is _________ about his chances of winning a gold medal in the Olympics next year.
A.optimisticB.optionalC.optimalD.obsessed
A

试题分析:句意:他对自己明年在奥运会上赢得金牌的机会很乐观。optimistic乐观的; optional可自由选择的,任意的;optimal 最佳的,最优的;obsessed迷住。根据句意判断选A。
考点考查形容词在语境中的应用辨析。
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