The market is beginning to（）into well-defined categories.
A、break
B、crash
C、run
D、segment
【正确答案】：D
【题目解析】：本题考查动词辨析。break into 闯入，突然开始。crash v. 撞击，碰撞。run into sb 偶然遇见某人。run into sth 遭遇，遇到（困难）。segment v. 分割，划分。主语是“market”，宾语是“categories”类别，所以D选项“划分”最符合句意。句意：市场逐渐划分成几个鲜明的类别。
