【題目】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

【答案】A
【解析】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,所以答案是A。

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