填空题

Two of the most vital functions performed in any economy are

【参考答案】

saving and investment

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Galileo’s greatest glory was that in 1609 he was the first person to turn the newly invented telescope on the heavens to prove that the planets revolve around the sun rather than around the earth.

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Over the years, tools and technology themselves as a source of fundamental innovation have largely been ignored by historians and philosophers of science.

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