题目
The grand canal was helpful in _A. protecting the environmentB. boosting the local agricultureC. national unityD. economic development
The grand canal was helpful in _
A. protecting the environment
B. boosting the local agriculture
C. national unity
D. economic development
题目解答
答案
D. economic development
解析
大运河是中国古代的一项重要工程,它连接了中国的多个重要水系,促进了南北之间的物资交流和经济联系。因此,大运河对经济发展起到了重要的推动作用。