- What’s the number of students in your classroom?---It’s about fiftyof them are gir

问题补充：

--- What’s the number of students in your classroom?

---It’s about fifty. of them are girls.

A., Two third B. Two thirds C. Second third

答案：

解析：句意：上句问在你们班学生的数目是多少？下句回答大约50，三分之二是女生。用“基数词＋序数词”表示 分数在英语中通常是借助于基数词和序数词来共同表达的。其中基数词表示分子，序数词表示分母如果分子超过一分母用复数 1/4和3/4可以说a（one）fourth和three fourths，故选B。