【问题】 The librarians are busy arranging the books bought recently by ______.( )·portions·categories·specimens·indexes

The librarians are busy arranging the books bought recently by ______.( )·portions·categories·specimens·indexes

正确答案:单选题·categories

题目解析:本题出自佳木斯大学,佳木斯大学语言治疗学,由丰阳塔题库搜集整理。