Some scientists think that it may take _________years to make robots look like people, and do the same things as us.
A. hundreds of   B. two hundreds of   C. two hundreds   
A

試題分析：句意：一些科學(xué)家認為制造像人一樣的機器人跟我們做一樣的事有可能花費數(shù)百年時間。在hundred前面有具體數(shù)詞時，不用復(fù)數(shù)，不連用of，但前面沒有具體數(shù)詞時即表示概數(shù)時，必須使用復(fù)數(shù)形式并連用of，所以選A。
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