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【题目】Though faced with so many difficulties, they are _____ about their future.

A. curious B. enthusiastic

C. optimistic D. concerned

【答案】C

【解析】

试题分析: 考查形容词辨析。A. curious 好奇的;B. enthusiastic热情的;C. optimistic乐观的;D. concerned关心的;句意:虽然他们面对许多的困难,但他们对于未来还是很乐观的。根据句意可知选C项。

考点 : 考查形容词辨析

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