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题目
题型:不详难度:来源:
Scientists across the world agree that this is an invention of _______ great significance, _______ invention that will greatly change human life.   
A.a; theB.a; anC./ ; theD./ ; an

答案
D
解析
考查冠词。Of  great significance,固定短语,意义重大的,介词后一般不加冠词。结合上文an invention一项发明,本句和前文为并列表语,泛指任何一项发明,故用不定冠词,词首音素为元音,故选D。
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试题【Scientists across the world agree that this is an invention of _______ great sig】;主要考察你对冠词等知识点的理解。[详细]
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