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    19、Without this year’s Nobel Prize in physics winner Charles Kao’s idea of fiber-optic（光纤的）communications, the “modern” telephone and Internet_________impossible．

    A．will be         B．were to be          C．should be       D．would be

    19、D

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    Without this year’s Nobel Prize in physics winner Charles Kao’s idea of fiber-optic（光纤的）communications, the “modern” telephone and Internet_________impossible．

    A．will be         B．were to be          C．should be       D．would be

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