题目

We spent many years studying the formation of rocks , experiencing many sufferings and even death. But our hard work      in the end , and we made it. A. came out           B. paid off        C. made up     D. gave away 答案：B解决水资源空间分布不均的措施是 [     ]A．植树造林B．建防洪大堤C．跨流域调水D．兴修水库