题目内容
20.She is optimisticabouther chances of winning a gold medal.分析 她对夺得金牌很乐观.
解答 答案:about.根据句意可知此处填"对…很乐观",而"be optimistic about…"意为"对…感到乐观",故填about.
点评 本题考查固定搭配的使用.根据句意选择合适的固定搭配.
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