Some scientists think that it may take ______years to make robots look like people,  and do the same things as us.
A.hundreds ofB.two hundreds of
C.two hundredsD.two hundred of
A
此題重點考察數(shù)量的表示方法,確切的數(shù)量德表示方法:數(shù)詞+hundred/thousand/million+名復(fù);不確切數(shù)量的表示方法是hundreds/thousands
/millions of+名詞的復(fù)數(shù)形式。
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