单选题：What is exciting about the new fuel cells?

题目分类：理工类
题目类型：单选题
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题目内容：

What is exciting about the new fuel cells? A．Their limitless power generation capacity is amazing.
B．Their limited power generation capacity is a good beginning.
C．Their limited power generation capacity is the result of great efforts.
D．Their limitless power generation capacity is a major accomplishment.

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答案解析：

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分类：理工类题型：单选题

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分类：理工类题型：单选题

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分类：理工类题型：单选题