题目内容

9. The Three Gorges Dam,which is the biggest construc- tion project in China since the building of the Great Wall and the Grand Canal, to control flood- ing and provide hydro-electric power for the central region of China.

   A. was built   B. is built

   C. will be built   D. has been built

9. D

9. D解析:由since引导的时间状语可 知,应用现在完成时态,故选D项。

练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网