There were about six students in the school building during the earthquake and of them

问题补充：

There were about six students in the school building during the earthquake, and of them didn’t run out.

A. hundred, two third

B. hundred, two thirds

C. hundreds, two thirds

D. hundreds, two third

答案：

A. hundred, two third

(答案→)B. hundred, two thirds

C. hundreds, two thirds

D. hundreds, two third

解析：句意：在地震期间在这个教学楼里大约有六百个学生。他们中的三分之二没有跑出去。hundred,thousand million 等和具体数字连用，不加s，是具体数字。hundred,thousand million后加s,of，表示数百，数千，数百万，是模糊数字。六百具体数字。在英语中分子用基数词表达，分母用序数词表达如果分子大于1，分母变复数。根据句意，故选B。