years ago, the population of China was over 20 million.
A. Four hundreds
B. Four hundred
C. Four hundred of
D. Four hundreds of
网友回答
A. Four hundreds
(答案→)B. Four hundred
C. Four hundred of
D. Four hundreds of
解析:此题考查名词的量。确切数量常用数词+hundred/thousand/million/
billion+名词的复数形式;不确切数量常用hundreds/thousands/millions/billions + of+名词的复数形式.根据语境可知选择B。