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Without this year’s Nobel Prize in physics winner Charles Kao’s idea of fibrotic(光纤的)communications, the “modern” telephone and Internet _________impossible.
A.will beB.were to beC.should beD.would be
D
通过对Without this year’s Nobel Prize in physics winner Charles Kao’s idea of fibrotic(光纤的)communications的理解可知这是一个虚拟语气的句子,主句应选择情态动词would,所以答案D。
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