问题
选择题
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
D．two hundred of
答案
答案：A
此题重点考察数量的表示方法，确切的数量德表示方法：数词+hundred/thousand/million+名复;不确切数量的表示方法是hundreds/thousands
/millions of+名词的复数形式。