问答题

Coal and oil which have been regarded as the chief resources in our daily life will soon be replaced by solar energy in the near future.

【参考答案】

煤碳和石油一直被认为是我们日常生活中的主要能源，在不久的将来定会被太阳能所代替。

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Every country in the world has a currency with a rate at which it exchanges for another country’s currency.

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