问题
选择题
There are about _____ students in the school, and ____ of them are boys.
A. two thousand, three fifth
B. two thousand, three fifths
C. two thousands, three fifths
答案
答案：B
题目分析: 句意：学校里有约两个名学生，五分之三的学生是男孩。thousand千，前加数词时不能加s; 分数的结构为分子为基数词，分母为序数词，分子大于1时，分母加s,故选B