. To the surprise of many people in ten years the city’s population by 12%.A. gainedB. e

问题补充：

. To the surprise of many people, in ten years the city’s population by 12%.

A. gained

B. expanded

C. developed

D. spread

答案：

A. gained

(答案→)B. expanded

C. developed

D. spread

解析：词义辨析。 A. 增加；收获 B. 扩张；发展C. 发育；生长 D.传播；展开。句意：让许多人吃惊的是，在十年中这个诚实的人口扩展了12%。故选B。