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  3. How many new materials are mentioned in this passage? Where lies success of a country in the New Age of Superstuff?

How many new materials are mentioned in this passage? Where lies success of a country in the New Age of Superstuff?

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问题 How many new materials are mentioned in this passage?
Where lies success of a country in the New Age of Superstuff?
选项 A、It lies in research.
B、It lies in investment.
C、It lies in innovation.
D、It lies in application.
答案D
解析
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