Question

Beijing        a lot in the past ten years. Now it has become one of the biggest modern      in the world.

A. changes; cities   B. changed; city

C. has changed; cities  D. changed; cities

Answer

C

【解析】

试题分析：句意：北京在过去十年发生了很大变化。现在它成为世界上最大的现代化城市之一。与时间状语in the past ten years连用，用现在完成时，故第一空为has changed。one of the+复数名词，故第二空为cities。故选C。

考点：考查时态和名词的用法。