of the teachers are women in our school.A. Second thirds B. Two threes C. Two thirds

问题补充：

of the teachers are women in our school.

A. Second thirds B. Two threes C. Two thirds

答案：

解析：句意：我们学校三分之二的老师是女士。英语中分数的表达方法，分子用基数词，分母用序数词，当分子大于1时，分母用复数。故选C。