The number of the students in our school is about nine of them are boys.A. hundred; Two

问题补充：

The number of the students in our school is about nine . of them are boys.

A. hundred; Two thirds

B. hundred; Two third

C. hundreds ; Two thirds

D. hundreds; Two third

答案：

A. hundred; Two thirds

B. hundred; Two third

C. hundreds ; Two thirds

D. hundreds; Two third

解析：考查数词。句意：我们学校学生的数量大概是900。三分之二的是男生。分数的表达方法， 分子用基数词，分母用序数词。分子大于一，分母用复数形式。分子前分母后，故选A项。

考点 :考查数词