题目内容
19．Some scientists believe that there will be more robots in years．（ ）| A． | hundreds of | B． | hundred of | C． | two hundreds of | D． | two hundreds |
分析 一些科学家相信几百年后会有更多的机器人．
解答 正确答案：A．hundred，thousand等数词如表示不确定数目，其常用表达是hundreds/thousands of，后跟可数名词复数．当表达确定数目时，其常用表达是基数词+hundred/thousand，后跟可数名词复数．根据句意一些科学家相信几百年后会有更多的机器人，此处指不确定的数目，则应用hundreds of，故选择A．BCD三项表达错误，两百应是two hundred．
点评 本题考查数词，记住hundred，thousand的基本用法，再根据题干进行选择．
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