He is______about his chances of winning a gold medal in the Olympics next year.

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问题 He is______about his chances of winning a gold medal in the Olympics next year.

选项 A、optimistic
B、optional
C、outstanding
D、obvious

答案A

解析 optimistic:“乐观的,有信心的”;optional:“可选择的,随意的”;outstanding“突出的”;obvious:“明显的,显而易见的”。
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